CCAPP AstroParticle Lunch

Here, members of CCAPP, Physics, and Astronomy get together to discuss papers and recent developments in high-energy astrophysics and astroparticle physics, in an informal setting over lunch. Please check the page for details regarding the next meeting.

Organizers:

Po-Wen Chang -- chang.1750@osu.eduIván Esteban -- esteban.6@osu.eduKeith McBride -- mcbride.342@osu.edu

Fridays from 11:45 am - 12:45 pm (EDT)

Price Place (PRB) & VIA ZOOM

COMING UP:

2022

11:45 am, Friday, Nov 18th

Use this link to access the meeting: ZOOM

Guest: Pawan Dhakal

Title: New Constraints on Macroscopic Dark Matter Using Radar Meteor Detectors

Abstract: We show that dark-matter candidates with large masses and large nuclear interaction cross sections are detectable with terrestrial radar systems. We develop our results in close comparison to successful radar searches for tiny meteoroids, aggregates of ordinary matter. The path of a meteoroid (or suitable dark-matter particle) through the atmosphere produces ionization deposits that reflect incident radio waves. We calculate the equivalent radar echoing area or `radar cross section' for dark matter. By comparing the expected number of dark-matter-induced echoes with observations, we set new limits in the plane of dark-matter mass and cross section, complementary to pre-existing cosmological limits. Our results are valuable because (A) they open a new detection technique for which the reach can be greatly improved and (B) in case of a detection, the radar technique provides differential sensitivity to the mass and cross section, unlike cosmological probes.


  1. White Dwarfs in Dwarf Spheroidal Galaxies: A New Class of Compact-Dark-Matter Detectors

  2. Dark Matter or Regular Matter in Neutron Stars? How to tell the difference from the coalescence of compact objects

  3. Entanglement in three-flavor collective neutrino oscillations

  4. γ-ray and ultra-high energy neutrino background suppression due to solar radiation

  5. Deciphering the ~18 TeV photons from GRB 221009A

  6. Hidden Hearts of Neutrino Active Galaxies

  7. Black Holes as "Time Capsules": A Cosmological Graviton Background and the Hubble Tension

  8. Field line subdiffusion and cosmic ray perpendicular transport in isotropic turbulence

  9. Diffusion of relativistic charged particles and field lines in isotropic turbulence

  10. A Simple Sub-Grid Model For Cosmic Ray Effects on Galactic Scales

  11. Indirect Detection of Dark Matter Annihilating into Dark Glueballs

  12. On the Hadronic Origin of High Energy Emission of γ-ray Loud Narrow-Line Seyfert 1 PKS 1502+036

  13. First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA

  14. Energy Reconstruction in Analysis of Cherenkov Telescopes Images in TAIGA Experiment Using Deep Learning Methods

  15. Interaction between massive star winds and the interstellar medium

  16. Detection of the 4.4-MeV gamma rays from 16O(ν,ν′)16O(12.97 MeV,2−) with a water-Cherenkov detector in the supernova neutrino bursts

  17. Limits on Leptonic TeV Emission from the Cygnus Cocoon with Swift-XRT

  18. Review of the online analyses of multi-messenger alerts and electromagnetic transient events with the ANTARES neutrino telescope

  19. Diffuse neutrino flux measurements with the Baikal-GVD neutrino telescope

  20. Exponential methods for anisotropic diffusion

  21. Numerical study of GCR proton transport

  22. Discovery of GeV gamma-ray emission from PWN Kes 75 and PSR J1846-0258

  23. Charging of free-falling test masses in orbit due to cosmic rays: results from LISA Pathfinder

  24. The Pandora project. I: the impact of radiation and cosmic rays on baryonic and dark matter properties of dwarf galaxies

  25. Adaptive surface code for quantum error correction in the presence of temporary or permanent defects

  26. Plasmoid Instability in the Multiphase Interstellar Medium

  27. Influence of extragalactic magnetic fields on extragalactic cascade gamma-ray emission

  28. Constraints on Dark Matter-Electron Scattering from Molecular Cloud Ionization

  29. Detecting gamma-rays with moderate resolution and large field of view: Particle detector arrays and water Cherenkov technique

  30. Ultra high energy cosmic rays from past activity of Andromeda galaxy

  31. The Impact of Cosmic Ray Injection on Magnetic Flux Tubes in a Galactic Disk

  32. The cosmic ray ionisation and γ-ray budgets of star-forming galaxies

  33. Uncertainties of the 30-408 MHz Galactic emission as a calibration source for radio detectors in astroparticle physics

  34. Constraining the sources of ultra-high-energy cosmic rays across and above the ankle with the spectrum and composition data measured at the Pierre Auger Observatory

PAST EVENTS

11:45 am, Friday, Nov 4th

Use this link to access the meeting: ZOOM

Guest: Joaquim Iguaz (LAPTh, CNRS)

Title: Are PBHs everything everywhere all at once? Astrophysical and cosmological signatures of PBHs

Abstract: In recent years, Primordial Black Holes (PBHs) have been presented as extremely versatile objects providing a unique probe of the early Universe, gravitational phenomena, high energy physics and quantum gravity. Of particular interest is the role of PBHs as a non-particle candidate for the dark matter (DM). Although most of the PBH DM parameter space is tightly constrained, the asteroid mass range is still potentially viable. The lower end is accessible via high-energy astrophysical probes, sensitive to their Hawking evaporation spectrum. In the first part of the talk, I will revisit the constraints on evaporating PBHs from both the isotropic X-ray and soft γ-ray background, and the diffuse soft γ-ray emission towards the inner Galaxy as measured by INTEGRAL, setting the strongest limit on PBH DM for masses up to 4×10^17 g. The interest for PBHs has also been revamped in the light of recent LIGO/Virgo measurements of coalescing black hole binaries with typical masses of tens of M⊙. The best-motivated scenario for a sizable PBH contribution to such events invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale. In the second part of the talk, I will reconsider the expected mass function associated not only to the QCD phase transition proper, but also the following particle antiparticle annihilation processes, and analyse the constraints on this scenario from a number of observations. We find that the scenario is not viable, unless ad hoc features in the power-spectrum are introduced by hand. Despite these negative results, we note that a future detection of coalescing binaries involving sub-solar PBHs has the potential to check the cosmological origin of SMBHs at the e± annihilation epoch, if indeed the PBH mass function is shaped by the changes to the equation of state driven by the thermal history of the universe.


Guest: Christopher Cappiello (Queen's U)

[https://arxiv.org/abs/2210.09448]

Title: Dark Matter from Monogem

Abstract: As a supernova shock expands into space, it may collide with dark matter particles, scattering them up to velocities more than an order of magnitude larger than typical dark matter velocities in the Milky Way. If a supernova remnant is close enough to Earth, and the appropriate age, this flux of high-velocity dark matter could be detectable in direct detection experiments, particularly if the dark matter interacts via a velocity-dependent operator. This could make it easier to detect light dark matter that would otherwise have too little energy to be detected. We show that the Monogem Ring supernova remnant is both close enough and the correct age to produce such a flux, and thus we produce novel direct detection constraints and sensitivities for future experiments.


  1. Evidence for neutrino emission from the nearby active galaxy NGC 1068

  2. White Dwarfs in Dwarf Spheroidal Galaxies: A New Class of Compact-Dark-Matter Detectors

  3. GRB 221009A: A light dark matter burst or an extremely bright Inverse Compton component?

  4. Treasure Maps for Detections of Extreme Energy Cosmic Rays

  5. Dark matter freeze-in produces large post-inflationary isocurvature

  6. Constraints on populations of neutrino sources from searches in the directions of IceCube neutrino alerts

  7. Testing Primordial Black Hole Dark Matter with ALMA Observations of the Gravitational Lens B1422+231

  8. GRB221009A Gamma Rays from Radiative Decay of Heavy Neutrinos?

  9. Cosmic Ray Antihelium from a Strongly Coupled Dark Sector

  10. The Steady-State Multi-TeV Diffuse Gamma-Ray Emission Predicted with GALPROP and Prospects for the Cherenkov Telescope Array

  11. Detecting neutrino-boosted axion dark matter in the MeV gap

  12. Description and performance results of the trigger logic of TUS and Mini-EUSO to search for Ultra-High Energy Cosmic Rays from space

  13. Neutrino Origin of LHAASO's 18 TeV GRB221009A Photon


PAST EVENTS

11:45 am, Friday, Oct 28th

Use this link to access the meeting: ZOOM

  1. New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity

  2. Corrections to Hawking Radiation from Asteroid Mass Primordial Black Holes: I. Formalism of Dissipative Interactions in Quantum Electrodynamics

  3. Implications of the non-observation of 6Li in halo stars for the primordial 7Li problem

  4. If dark matter is fuzzy, the first stars form in massive pancakes

  5. Uncovering the neutrino mass ordering with the next galactic core-collapse supernova neutrino burst

  6. Ultrahigh-energy cosmic-ray signature in GRB 221009A

  7. Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory

  8. Search for spatial coincidence between IceCube neutrinos and radio pulsars

  9. Clusteringenesis: from Light to Heavy Primordial Black Holes

  10. Towards a reliable calculation of relic radiation from primordial gravitational waves

  11. Super-resolution simulation of the Fuzzy Dark Matter cosmological model

  12. Neutrino-anti-neutrino instability in dense neutrino systems, with applications to the early universe and to supernovae

  13. The Role of a Heavy Neutrino in the Gamma-Ray Burst GRB-221009A

  14. Model constraints based on the IceCube neutrino non-detection of GRB 221009A

  15. On the Merger Rate of Primordial Black Holes in Cosmic Voids

  16. Cosmological Implications of a Neutrino Mass Detection

  17. Converting dark matter to dark radiation does not solve cosmological tensions

  18. Neutrinos from the Brightest Gamma-Ray Burst?


11:45 am, Friday, Oct 21st

Use this link to access the meeting: ZOOM

  1. High-energy neutrinos from choked-jet supernovae: searches and implications

  2. X-ray Properties of NGC 253's Starburst-Driven Outflow

  3. Why is zero spatial curvature special?

  4. Axion dark matter from first-order phase transition, and very high energy photons from GRB 221009A

  5. Dark Matter from Monogem

  6. Dark Matter Induced Power in Quantum Devices

  7. New Constraints on Dark Matter and Cosmic Neutrino Profiles through Gravity

  8. Strong lensing constraints on primordial black holes as a dark matter candidate

  9. Dark Matter prospects with COSI: ALPs, PBHs and sub-GeV Dark Matter

  10. Parameters of axion-like particles required to explain high-energy photons from GRB 221009A

  11. Lorentz invariance violation induced threshold anomaly versus very-high energy cosmic photon emission from GRB 221009A

  12. Interpretation of multi-TeV photons from GRB221009A

  13. High-energy neutrino emission from magnetised jets of rapidly rotating protomagnetars

  14. Electroweak axion in light of GRB221009A

  15. Gravitational focusing effects on streaming dark matter as a new detection concept

  16. Evidence of a signature of planet formation processes from solar neutrino fluxes

  17. On the Sensitivity of Spin-Precession Axion Experiments

  18. Starburst Nuclei as Light Dark Matter Laboratories

  19. The PI Launchpad: Expanding the base of potential Principal Investigators across space sciences


11:45 am, Friday, Oct 6th

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Guest: Gonzalo Herrera (TUM)

Title: Neutrino and gamma-ray attenuation by dark matter spikes

[https://arxiv.org/abs/2209.06339]

Abstract:

In this talk, I will discuss the attenuation of high energy neutrinos and photons produced in a blazar when they propagate through the dark matter spike around the central black hole and the halo of the host galaxy. In particular, I will discuss new constraints on the dark matter-neutrino and dark matter-photon scattering cross sections obtained from the observation by IceCube of a few high-energy neutrino events from TXS 0506+056, and their coincident gamma-ray events. I will emphasize the dependence of the constraints with the location where the neutrinos and gamma-rays are produced, and the dependence with the dark matter self-annihilation cross section. The constraints are orders of magnitude more stringent than those derived from considering the attenuation through the intergalactic medium and the Milky Way dark matter halo. When the cross-section increases with energy, the constraints are also stronger than those derived from the CMB and large-scale structure.


Guest: Rostom Mbarek (U Chicago)

Title: High-Energy Neutrino Emission from Espresso-Accelerated Ions in Jets of Active Galactic Nuclei

[https://arxiv.org/abs/2207.07130]

Abstract:

We present a bottom-up calculation of the flux of ultra-high energy cosmic rays (UHECRs) and high-energy neutrinos produced by powerful jets of active galactic nuclei (AGNs). By propagating test particles in 3D relativistic magnetohydrodynamic jet simulations, including a Monte Carlo treatment of sub-grid pitch-angle scattering and attenuation losses due to realistic photon fields, we study the spectrum and composition of the accelerated UHECRs and estimate the amount of neutrinos produced in such sources. We find that UHECRs may not be significantly affected by photodisintegration in AGN jets where the espresso mechanism efficiently accelerates particles, consistent with Auger's results that favor a heavy composition at the highest energies. Moreover, we present estimates and upper bounds for the flux of high-energy neutrinos expected from AGN jets. In particular, we find that: i) source neutrinos may account for a sizable fraction, or even dominate, the expected flux of cosmogenic neutrinos; ii) neutrinos from the \beta-decay of secondary neutrons produced in nucleus photodisintegration could in principle contribute to the PeV neutrino flux observed by IceCube, but can hardly account for all of it; iii) UHECRs accelerated via the espresso mechanism lead to nearly isotropic neutrino emission, which suggests that nearby radio galaxies may be more promising as potential sources. We discuss our results in the light of multimessenger astronomy and current/future neutrino experiments.


  1. High-energy neutrinos from choked-jet supernovae: searches and implications

  2. Dark Matter decay to neutrinos

  3. Explosive nucleosynthesis with fast neutrino-flavor conversion in core-collapse supernovae

  4. High Altitude characterization of the Hunga Pressure Wave with Cosmic Rays by the HAWC Observatory

  5. Neutrino propagation in the Earth and emerging charged leptons with 𝚗𝚞𝙿𝚢𝙿𝚛𝚘𝚙

  6. Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157

  7. Neutrino Cadence of TXS~0506+056 Consistent with Supermassive Binary Origin

  8. Astroparticle and particle physics at ultra-high energy: results from the Pierre Auger Observatory

  9. High-energy neutrino-induced cascade from the direction of the flaring radio blazar TXS 0506+056 observed by the Baikal Gigaton Volume Detector in 2021


11:45 am, Friday, Sept 23rd

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  1. Prospects for detection of a Galactic diffuse neutrino flux

  2. New Constraints on Macroscopic Dark Matter Using Radar Meteor Detectors

  3. Improved Constraints on Dark Matter Annihilations Around Primordial Black Holes

  4. Constraints on the hosts of UHECR accelerators

  5. Resonant Production of Light Sterile Neutrinos in Compact Binary Merger Remnants

  6. Floating Dark Matter in Celestial Bodies

  7. Searching for axion dark matter with MeerKAT Radio Telescope

  8. X-ray Properties of NGC 253's Starburst-Driven Outflow

  9. Novel Constraints on Axions Produced in Pulsar Polar Cap Cascades

  10. A Double Layered Water Cherenkov Detector Array for Gamma-Ray Astronomy

  11. Can the Production Cross-Section Uncertainties Explain the Cosmic Fluorine Anomaly?

  12. Challenges for dark matter direct search with SiPMs

  13. Six textbook mistakes in data analysis

  14. Neutron Tagging following Atmospheric Neutrino Events in a Water Cherenkov Detector

  15. Structure in the Magnetic Field of the Milky Way Disk and Halo traced by Faraday Rotation

  16. Measurement of Hadron Production in π−-C Interactions at 158 and 350 GeV/c with NA61/SHINE at the CERN SPS

  17. Testing hadronic and photo-hadronic interactions as responsible for UHECR and neutrino fluxes from Starburst Galaxies

  18. Using TeV Cosmic Rays to probe the Heliosphere's Boundary with the Local Interstellar Medium

  19. Limits on the Diffuse Gamma-Ray Background above 10 TeV with HAWC

11:45 am, Friday, Sept 16th

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  1. Where are Milky Way’s Hadronic PeVatrons?

  2. Exploiting stellar explosion induced by the QCD phase transition in large-scale neutrino detectors

  3. The Irreducible Axion Background

  4. Near-Earth Supernovae in the Past 10 Myr: Implications for the Heliosphere

  5. Neutrino Flux Deduced from γ-rays Emitted by Novae

  6. Astrophysical Observations of a Dark Matter-Baryon Fifth Force

  7. Determining the Hubble Constant without the Sound Horizon: A 3.6% Constraint on H0 from Galaxy Surveys, CMB Lensing and Supernovae

  8. Search for photons above 10^19 eV with the surface detector of the Pierre Auger Observatory

  9. Probing Quantum Gravity with Elastic Interactions of Ultra-High-Energy Neutrinos

  10. Snowmass 2021 topical group report: Neutrinos from Natural Sources

  11. Snowmass Neutrino Frontier: NF02 Topical Group Report on Understanding Experimental Neutrino Anomalies

  12. New constraints on the dark matter-neutrino and dark matter-photon scattering cross sections from TXS 0506+056

  13. Cosmic searches for Lorentz invariance violation

11:45 am, Friday, Sept 9nd

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  1. IceCube search for neutrinos coincident with gravitational wave events from LIGO/Virgo run O3

  2. Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube

  3. Dark matter substructures affect dark matter-electron scattering in direct detection experiments

  4. The impact of primordial black holes on the 21-cm angular-power spectrum in the dark ages

  5. Probing hadronic interaction models with the hybrid data of the Pierre Auger Observatory

  6. Observation of Spectral Structures in the Flux of Cosmic-Ray Protons from 50 GeV to 60 TeV with the Calorimetric Electron Telescope on the International Space Station

  7. Testing the Gallium Anomaly

  8. Pulsars as candidates of LHAASO sources J2226+6057, J1908+0621 and J1825-1326

  9. Blazar constraints on neutrino-dark matter scattering

  10. Compact Binary Foreground Subtraction in Next-Generation Ground-Based Observatories

  11. Subtracting Compact Binary Foregrounds to Search for Subdominant Gravitational-Wave Backgrounds in Next-Generation Ground-Based Observatories

  12. Axion Dark Matter from Lepton flavor-violating Decays

  13. Light Curves and Event Rates of Axion Instability Supernovae

  14. Highlights from the Telescope Array Experiments

  15. Can the Production Cross-Section Uncertainties Explain the Cosmic Fluorine Anomaly?

  16. A PeVatron Candidate: Modelling the Boomerang Nebula in X-ray Band

  17. No room to hide: implications of cosmic-ray upscattering for GeV-scale dark matter

11:45 am, Friday, Sept 2nd

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  1. On the Origin of Observed Cosmic-Ray Spectrum Below 100 TV

  2. Galactic contribution to the high-energy neutrino flux found in track-like IceCube events

  3. Opportunistic search for continuous gravitational waves from compact objects in long-period binaries

  4. Phase mixing and the 1/f spectrum in the solar wind

  5. Interchange reconnection within coronal holes powers the fast solar wind

  6. Evaluation of the potential of a gamma-ray observatory to detect astrophysical neutrinos through inclined showers

  7. The supernova remnant SN 1006 as a Galactic particle accelerator

  8. Exploiting stellar explosion induced by the QCD phase transition in large-scale neutrino detectors

  9. The all-particle energy spectrum of cosmic rays from 10 TeV to 1 PeV measured with HAWC

  10. A measurement of the proton plus helium spectrum of cosmic rays in the TeV region with HAWC

  11. Detection of GeV emission from an ultra-long gamma-ray burst with the Fermi Large Area Telescope

  12. Internal heating mechanisms in neutron stars

11:45 am, Friday, Aug 19th

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  1. Galactic contribution to the high-energy neutrino flux found in track-like IceCube events

  2. A first search of transients in the Galactic Center from 230 GHz ALMA observations

  3. Compton Telescopes for Gamma-ray Astrophysics

  4. Identifying diffuse spatial structures in high-energy photon lists

  5. A Probabilistic Model for the Efficiency of Cosmic-Ray Radio Arrays

  6. Possible counterpart signal of the Fermi bubbles at the cosmic-ray positrons

  7. Into the darkness: Ultra-high energy neutrinos from high-redshift electromagnetic cascades

  8. Evidence for PeV Proton Acceleration from Fermi-LAT Observations of SNR G106.3+2.7

  9. Development of the photo-diode subsystem for the HERD calorimeter double-readout

  10. Cosmic-ray ionization rate in protoplanetary disks with sheared magnetic fields

  11. Turbulent Reacceleration of Streaming Cosmic Rays

  12. Check on the features of potted 20-inch PMTs with 1F3 electronics prototype at Pan-Asia

  13. The hunt for extraterrestrial high-energy neutrino counterparts

11:45 am, Friday, Aug 5th

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  1. Dynamical perturbations around an extreme mass ratio inspiral near resonance

  2. Constraining the Charge-, Time- and Rigidity-Dependence of Cosmic-Ray Solar Modulation with AMS-02 Observations during Solar Cycle 24

  3. Transport parameters from AMS-02 F/Si data and fluorine source abundance

  4. Jupiter missions as probes of dark matter

  5. Gravitational-wave event rates as a new probe for dark matter microphysics

  6. Core-collapse Supernova Constraint on the Origin of Sterile Neutrino Dark Matter via Neutrino Self-interactions

  7. Shining Light on Cosmogenic Axions with Neutrino Experiments

  8. A measurement of Hubble's Constant using Fast Radio Bursts

11:45 am, Friday, July 29th


Use this link to access the meeting: ZOOM

  1. Detection of diffuse gamma-ray emission towards a massive star forming region hosting Wolf-Rayet stars

  2. Limits on the cosmic neutrino background

  3. Ultra wideband axion search using a Faraday haloscope

  4. High-energy neutrino transients and the future of multi-messenger astronomy

  5. Search for New Physics in Electronic Recoil Data from XENONnT

  6. TAROGE-M: Radio Antenna Array on Antarctic High Mountain for Detecting Near-Horizontal Ultra-High Energy Air Showers

  7. Diffuse supernova neutrino background

  8. Iterative-Bayesian unfolding of isotopic cosmic-ray fluxes measured by AMS-02

  9. The Curious Case of Near-Identical Cosmic-Ray Accelerators

  10. On the contribution of cosmic-ray interactions in the circumgalactic gas to the observed high-energy neutrino flux

  11. Large-scale anisotropies of extragalactic cosmic rays below the ankle

  12. Escape of cosmic rays from perpendicular shocks in the circumstellar magnetic field

  13. Cosmic Ray Interstellar Propagation Tool using Itô Calculus (criptic): software for simultaneous calculation of cosmic ray transport and observational signatures

  14. Quantification of Unknown Unknowns in Astronomy and Physics

  15. Firefly: a browser-based interactive 3D data visualization tool for millions of data points

11:45 am, Friday, July 22nd

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  1. Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo

  2. A New Probe of Relic Neutrino Clustering using Cosmogenic Neutrinos

  3. Constraints on primordial black holes from observation of stars in dwarf galaxies

  4. XENONnT first results on Electronic Recoil events

  5. High-Energy Neutrino Emission from Espresso-Reaccelerated Ions in Jets of Active Galactic Nuclei

  6. Neutrino Flavor Conversion, Advection, and Collisions: The Full Solution

  7. Revisiting constraints on WIMPs around primordial black holes

  8. Dark Matter Constraints from the Eccentric Supermassive Black Hole Binary OJ 287

  9. Observational constraints on cosmic-ray escape from UHE accelerators

  10. The MIGDAL experiment: Measuring a rare atomic process to aid the search for dark matter

  11. Higgsino Dark Matter Confronts 14 years of Fermi Gamma Ray Data

  12. ALP Dark Matter Mini-Clusters from Kinetic Fragmentation

  13. Revisiting big bang nucleosynthesis with a new particle species : effect of co-annhilation with neutrons

  14. Cosmological prior for the J-factor estimation of dwarf spheroidal galaxies

  15. Astrophysical Tests of Dark Matter Self-Interactions

  16. Search for dark matter annihilation signals in the H.E.S.S. Inner Galaxy Survey

11:45 am, Friday, July 15th (Pure virtual)

Use this link to access the meeting: ZOOM


  1. Galactic Cosmic-Ray Propagation in the Inner Heliosphere: Improved Force-Field Model

  2. Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo

  3. Millisecond Pulsars in Dense Star Clusters: Evolution, Scaling Relations, and the Galactic-Center Gamma-ray Excess

  4. Testing the Collisionless Nature of Dark Matter with the Radial Acceleration Relation in Galaxy Clusters

  5. First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment

  6. Global view of neutrino interactions in cosmology: The freestreaming window as seen by Planck

  7. Solar ν¯e flux: Revisiting bounds on neutrino magnetic moments and solar magnetic field

  8. New constraint on neutrino magnetic moment from LZ dark matter search results

  9. Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo

  10. Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube

  11. Model marginalized constraints on neutrino properties from cosmology

  12. Closing the window on fuzzy dark matter with the 21cm signal

  13. Beginning a journey across the universe: the discovery of extragalactic neutrino factories

  14. Direct detection of dark photon dark matter using radio telescopes

  15. Searches for massive neutrinos with mechanical quantum sensors

11:45 am, Friday, July 8th (Pure virtual)

Guest: Marc Oncins (ICC-UB)

Title: Primordial black holes capture by stars and induced collapse to low-mass stellar black holes

[https://arxiv.org/abs/2205.13003]

Abstract:

Primordial black holes in the asteroid-mass window (∼10^(−16) to 10^(−11) M⊙), which might constitute all the dark matter, can be captured by stars when they traverse them at low enough velocity. After being placed on a bound orbit during star formation, they can repeatedly cross the star if the orbit happens to be highly eccentric, slow down by dynamical friction and end up in the stellar core. The rate of these captures is highest in halos of high dark matter density and low velocity dispersion, when the first stars form at redshift z∼20. We compute this capture rate for low-metallicity stars of 0.3 to 1M⊙, and find that a high fraction of these stars formed in the first dwarf galaxies would capture a primordial black hole, which would then grow by accretion up to a mass that may be close to the total star mass. We show the capture rate of primordial black holes does not depend on their mass over this asteroid-mass window, and should not be much affected by external tidal perturbations. These low-mass stellar black holes could be discovered today in low-metallicity, old binary systems in the Milky Way containing a surviving low-mass main-sequence star or a white dwarf, or via gravitational waves emitted in a merger with another compact object. No mechanisms in standard stellar evolution theory are known to form black holes of less than a Chandrasekhar mass, so detecting a low-mass black hole would fundamentally impact our understanding of stellar evolution, dark matter and the early Universe.

Use this link to access the meeting: ZOOM

  1. Towards Powerful Probes of Neutrino Self-Interactions in Supernovae

  2. Galactic Cosmic-Ray Propagation in the Inner Heliosphere: Improved Force-Field Model

  3. High-energy neutrinos and gamma rays from winds and tori in active galactic nuclei

  4. Double and multiple bangs at tau neutrino telescopes: A novel probe of sphalerons with cosmogenic neutrinos

  5. Neutron star observations of pseudoscalar-mediated dark matter

  6. Snowmass 2021 Rare & Precision Frontier (RF6): Dark Matter Production at Intensity-Frontier Experiments

  7. Resonant Electric Probe to Axionic Dark Matter

  8. Neutrino Properties and Interactions

  9. Extinction of the TeV Gamma Ray Background by Sunlight

11:45 am, Friday, June 24th

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  1. Searching for dark energy with the Sun

  2. Searching for Invisible Axion Dark Matter with an 18T Magnet Haloscope

  3. Deep learning for improved keV-scale recoil identification in high resolution gas time projection chambers

  4. A new life for sterile neutrino dark matter after the pandemic

  5. Neutrino Detection without Neutrino Detectors: Discovering Collider Neutrinos at FASER with Electronic Signals Only

  6. Neutrino-anti-neutrino instability in dense neutrino systems, with applications to the early universe and to supernovae

  7. Supernova Dust Evolution Probed by Deep-Sea 60Fe Time History

  8. Design and Initial Performance of the Prototype for the BEACON Instrument for Detection of Ultrahigh Energy Particles

  9. Earth through the looking glass: how frequently are we detected by other civilisations through photometric microlensing?

  10. A Lightweight Space-based Solar Power Generation and Transmission Satellite

  11. Investigating Hadronic Interactions at Ultra-High Energies with the Pierre Auger Observatory

  12. The Effects of Cosmic Rays on the Chemistry of Dense Cores

  13. Probing high-density nuclear symmetry energy with Ξ−/Ξ0 ratio in heavy-ion collisions at sNN−−−−√∼3 GeV

  14. Constraining axion-like particles with the diffuse gamma-ray flux measured by the Large High Altitude Air Shower Observatory

11:45 am, Friday, June 17th

Guest: Yu-Dai Tsai (UC, Irvine)

Title: Planetary Defense and Space Quantum Technologies for Fundamental Physics: Dark Matter, Gravity, and Cosmic Neutrinos

[https://arxiv.org/abs/2112.07674 & https://arxiv.org/abs/2107.04038]

Abstract:

I will talk about using planetary/asteroidal data and space quantum technologies to study fundamental physics.


I will first show a proposal using space quantum clocks to study solar-halo ultralight dark matter, motivated by the NASA deep space atomic clock (DSAC) and Parker Solar Probe (PSP).

We then discuss new constraints on fifth forces using asteroidal data. We will show preliminary results of the robust constraints by using the NASA JPL program and asteroid tracking data that are used for planetary defense purposes.

We then discuss model-independent constraints on any dark matter models through pure gravity.

Use this link to access the meeting: ZOOM

  1. SpaceQ - Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

  2. Asteroid astrometry as a fifth-force and ultralight dark sector probe

  3. Probing non-standard neutrino interactions with a light boson from next galactic and diffuse supernova neutrinos

  4. High-Energy Astrophysical Neutrinos from Cosmic Strings

  5. BSM Targets at a Target-less DUNE

  6. Improved White Dwarves Constraints on Inelastic Dark Matter and Left-Right Symmetric Models

  7. Neutrino lines from MeV dark matter annihilation and decay in JUNO

  8. Searching for Afterglow: Light Dark Matter boosted by Supernova Neutrinos

  9. One likelihood to bind them all: Lyman-α constraints on non-standard dark matter

  10. Impact of late-time neutrino emission on the Diffuse Supernova Neutrino Background

  11. Time-dependent, quasi-steady, and global features of fast neutrino-flavor conversion

  12. New estimate for the contribution of the Geminga pulsar to the positron excess

  13. Supernova Dust Evolution Probed by Deep-Sea 60Fe Time History

11:45 am, Friday, June 10th

Guest: Taylor Murphy (Ohio State)

Title: The many distinctive signals of frustrated dark matter

Abstract:

We study a renormalizable model of Dirac fermion dark matter (DM) that communicates with the Standard Model (SM) through a pair of mediators -- one scalar, one fermion -- in the representation (6,1,43) of the SM gauge group SU(3)c×SU(2)L×U(1)Y. While such assignments preclude direct coupling of the dark matter to the Standard Model at tree level, we examine the many effective operators generated at one-loop order when the mediators are heavy, and find that they are often phenomenologically relevant. We reinterpret dijet and pair-produced resonance and jets+EmissT searches at the Large Hadron Collider (LHC) in order to constrain the mediator sector, and we examine an array of DM constraints ranging from the observed relic density Ωχh2Planck to indirect and direct searches for dark matter. Tree-level annihilation, available for DM masses starting at the TeV scale, is required in order to produce Ωχh2Planck through freeze-out, but loops -- led by the dimension-five DM magnetic dipole moment -- are nonetheless able to produce signals large enough to be constrained, particularly by the XENON1T experiment. We find that the parameter space left open by experiment and compatible with freeze-out is quite small, indicating a potential need for further model-building and/or non-standard cosmologies.

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  1. Searching for High-Energy Neutrino Emission from Galaxy Clusters with IceCube

  2. Search for supernova bursts in Super-Kamiokande IV

  3. Sharp Signals of Boson Clouds in Black Hole Binary Inspirals

  4. The accurate mass distribution of M87, the Giant Galaxy with imaged shadow of its supermassive black hole, as a portal to new Physics

  5. PeV IceCube signals and H0 tension in the framework of Non-Local Gravity

  6. Evaluations of uncertainties in simulations of propagation of ultrahigh-energy cosmic-ray nuclei derived from microscopic nuclear models

  7. Impact of ionization and electron density gradients in X-ray reflection spectroscopy measurements

  8. Delta baryons in neutron stars

  9. Neutrino Rocket Jet Model: An Explanation of High-velocity Pulsars and their Spin-down Evolution

  10. A Search for Light Fermionic Dark Matter Absorption on Electrons in PandaX-4T

  11. General Relativistic Implicit Monte Carlo Radiation-Hydrodynamics

  12. Axion effects in the stability of hybrid stars

11:45 am, Friday, June 3rd

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  1. Detector Requirements for Model-Independent Measurements of Ultrahigh Energy Neutrino Cross Sections

  2. First-principle calculation of birefringence effects for in-ice radio detection of neutrinos

  3. Cosmological constraints on decaying axion-like particles: a global analysis

  4. Decaying warm dark matter revisited

  5. Improved Constraints on Cosmic Birefringence from the WMAP and Planck Cosmic Microwave Background Polarization Data

  6. The dark dimension, the Swampland, and the origin of cosmic rays beyond the GZK barrier

  7. Dark Matter Pollution in the Diffuse Supernova Neutrino Background

  8. Atom Interferometer Tests of Dark Matter

  9. Core-collapse supernovae and neutrino properties

  10. Probing the mass composition of primary cosmic rays from the effect of the geomagnetic field on EAS muons: A simulation study

  11. Constraints on PBH as dark matter from observations: a review

  12. Near-future discovery of point sources of ultra-high-energy neutrinos

  13. Probing the rest-frame of the Universe with near-IR cosmic infrared background

  14. The solar disk at high energies

  15. Supernova Neutrino Decoupling Is Altered by Flavor Conversion

  16. A search for photons with energies above 2×1017 eV using hybrid data from the low-energy extensions of the Pierre Auger Observatory

  17. Searching for dark energy with the Sun

11:45 am, Friday, May 27th

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  1. Detector Requirements for Model-Independent Measurements of Ultrahigh Energy Neutrino Cross Sections

  2. Gravothermal solutions of SIDM halos: mapping from constant to velocity-dependent cross section

  3. Anisotropic diffusion cannot explain TeV halo observations

  4. Searches for Neutrinos from Gamma-Ray Bursts using the IceCube Neutrino Observatory

  5. Searches for Connections between Dark Matter and High-Energy Neutrinos with IceCube

  6. Prospects for Detecting the Diffuse Supernova Neutrino Background with JUNO

  7. Oscillations of High-Energy Cosmic Neutrinos in the Copious MeV Neutrino Background

  8. Dark Solar Wind

  9. A New Way To Seek Out Dark Neutrino Sectors And To Boldly Explore Multi-Dimensional Parameter Spaces

  10. Constraining Feeble Neutrino Interactions with Ultralight Dark Matter

  11. Supernova Fast Flavor Conversions in 1+1 D : Influence of Mu-tau neutrinos

  12. Time-dependent interpretation of the neutrino emission from Tidal Disruption Events

  13. Cosmology-friendly time-varying neutrino masses via the sterile neutrino portal

  14. Constraints on sterile neutrino models from strong gravitational lensing, Milky Way satellites, and Lyman - α forest

  15. SEARCHING FOR SUPERNOVA NEUTRINOS WITH GW MEMORY TRIGGERS

11:45 am, Friday, May 13th

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Guest: Jan Heisig (RWTH Aachen)

Title: Lyman-alpha constraints on freeze-in and superWIMPs

Abstract:

Dark matter (DM) from freeze-in or superWIMP production is well known to imprint non-cold DM signatures on cosmological observables. We derive constraints from Lyman-alpha forest observations for both cases, basing ourselves on a reinterpretation of the existing Lyman-alpha limits on thermal warm DM. We exclude DM masses below 15 keV for freeze-in, in good agreement with previous literature, and provide a generic lower mass bound for superWIMPs that depends on the mother particle decay width. Special emphasis is placed on the mixed scenario, where contributions from both freeze-in and superWIMP are similarly important. In this case, the imprint on cosmological observables can deviate significantly from thermal warm DM. Furthermore, we provide a modified version of the Boltzmann code class, analytic expressions for the DM distributions, and fits to the DM transfer functions that account for both mechanisms of production. For illustration, we apply the above generic limits to a coloured t-channel mediator DM model, in which case contributions from both freeze-in through scatterings and decays, as well as superWIMP production can be important. We map out the entire cosmologically viable parameter space, cornered by bounds from Lyman-alpha observations, the LHC, and Big Bang Nucleosynthesis.


  1. Lyman-α constraints on freeze-in and superWIMPs

  2. Tau depolarization at very high energies for neutrino telescopes

  3. In-situ calibration system for the measurement of the snow accumulation and the index-of-refraction profile for radio neutrino detectors

  4. Search for new cosmic-ray acceleration sites within the 4FGL catalog Galactic plane sources

  5. Multi-messenger High-Energy Signatures of Decaying Dark Matter and the Effect of Background Light

  6. The TeV Diffuse Cosmic Neutrino Spectrum and the Nature of Astrophysical Neutrino Sources

  7. Constraining ultralight bosonic dark matter with Keck observations of S2's orbit and kinematics

  8. A minute-long merger-driven gamma-ray burst from fast-cooling synchrotron emission

11:45 am, Friday, May 6th

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Guest: Jakob van Santen (DESY)

Title: toise: a framework to describe the performance of high-energy neutrino detectors

Abstract:

Neutrinos offer a unique window to the distant, high-energy universe. Several next-generation instruments are being designed and proposed to characterize the flux of TeV--EeV neutrinos. The projected physics reach of the detectors is often quantified with simulation studies. However, a complete Monte Carlo estimate of detector performance is costly from a computational perspective, restricting the number of detector configurations considered when designing the instruments. In this paper, we present a new Python-based software framework, toise, which forecasts the performance of a high-energy neutrino detector using parameterizations of the detector performance, such as the effective areas, angular and energy resolutions, etc. The framework can be used to forecast performance of a variety of physics analyses, including sensitivities to diffuse fluxes of neutrinos and sensitivity to both transient and steady state point sources. This parameterized approach reduces the need for extensive simulation studies in order to estimate detector performance, and allows the user to study the influence of single performance metrics, like the angular resolution, in isolation. The framework is designed to allow for multiple detector components, each with different responses and exposure times, and supports paramterization of both optical- and radio-Cherenkov (Askaryan) neutrino telescopes. In the paper, we describe the mathematical concepts behind toise and provide detailed instructive examples to introduce the reader to use of the framework.


  1. The diffuse supernova neutrino background as a probe of late-time neutrino mass generation

  2. Timing and Multi-Channel: Novel Method for Determining the Neutrino Mass Ordering from Supernovae

  3. Distinguishing Dirac vs. Majorana neutrinos: a cosmological probe

  4. Collisional dilemma: Enhancement or damping of fast flavor conversion of neutrinos

  5. Neutrino mass and mass ordering: No conclusive evidence for normal ordering

  6. W boson mass, dark matter and (g − 2)` in ScotoZee neutrino mass model

  7. Axion-like Particles Implications for High-Energy Astrophysics

11:45 am, Friday, April 29th

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  1. Detection of gamma-ray emission from the Sagittarius Dwarf Spheroidal galaxy

  2. PeV Tau Neutrinos to Unveil Ultra-High-Energy Sources

  3. Observation of large scale precursor correlations between cosmic rays and earthquakes

  4. First constraints on axion-like particles from Galactic sub-PeV gamma rays

  5. Probing the extragalactic mid-infrared background with HAWC

  6. Neutrino secret self-interactions: a booster shot for the cosmic neutrino background

11:45 am, Friday, April 22th

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  1. The Sensitivity of Future Gamma-Ray Telescopes to Primordial Black Holes

  2. Simulation of the LSD Response to the Neutrino Burst from SN 1987A

  3. Independent determination of the Earth's orbital parameters with solar neutrinos in Borexino

  4. Observing Supernova Neutrino Light Curves with Super-Kamiokande. III. Extraction of Mass and Radius of Neutron Stars from Synthetic Data

  5. Luminous Supernovae: Unveiling a Population Between Superluminous and Normal Core-collapse Supernovae

  6. Detecting High-Energy Neutrino Minibursts from Local Supernovae with Multiple Neutrino Observatories

  7. Revisiting the evidences for spectral anomalies in distant blazars: new data on the photon-ALP mixing

  8. Simulating neutrino echoes induced by secret neutrino interactions

  9. Freeze-in and freeze-out of sterile neutrino dark matter

  10. Unveiling dark fifth forces with linear cosmology

  11. Time-delayed neutrino emission from supernovae as a probe of dark matter-neutrino interactions

  12. Thermal Friction as a Solution to the Hubble and Large-Scale Structure Tensions

  13. Ultra-high-energy cosmic ray acceleration by magnetic reconnection in relativistic jets and the origin of very high energy emission

  14. ADMX-Orpheus First Search for 70 μeV Dark Photon Dark Matter: Detailed Design, Operations, and Analysis

  15. Is the θ¯ parameter of QCD constant?

  16. Measurement of the vertical atmospheric density profile from the X-ray Earth occultation of the Crab Nebula with Insight-HXMT

11:45 am, Friday, April 15th

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  1. The Andromeda Gamma-Ray Excess: Background Systematics of the Millisecond Pulsars and Dark Matter Interpretations

  2. Multi-spacecraft analysis of the properties of Magnetohydrodynamic Perturbations in Solar Wind turbulence at 1 au

  3. Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB

  4. Visible Neutrino Decays and the Impact of the Daughter-Neutrino Mass

  5. The Sensitivity of Future Gamma-Ray Telescopes to Primordial Black Holes

  6. High-precision measurement of theW boson mass with the CDF II detector

11:45 am, Friday, April 1st

Guest: Pedro De la Torre Luque (Stockholm University)

Title: The FLUKA cross sections for cosmic-ray propagation

Abstract:

While the accuracy of current cosmic-ray (CR) data allows us to carry out precise tests of our models of propagation of charged particles in the Galaxy, the precision of cross sections data for the production of secondary particles (secondary CRs, neutrinos, gamma rays) is very poor, considerably limiting these tests. Given that most of the calculations of these cross sections from fundamental models of particle interactions are in disagreement with data, we rely on parameterizations fitted to the very scarce and uncertain experimental data.

In the last years, the FLUKA Monte Carlo nuclear toolkit has been optimized to be used in different kinds of CR studies and has been extensively tested against data. In this talk, we present new sets of spallation cross sections of CR interactions in the Galaxy, both inelastic and inclusive, computed with FLUKA. Furthermore, these cross sections have been implemented in the DRAGON2 code to characterize the spectra of CR nuclei up to Z=26 (Iron) and study the main propagation parameters predicted from the spectra of secondary CRs such as B, Be and Li. These results and their implications will be discussed in the talk.


Guest: Akaxia Cruz (Washington U., Seattle)

Title: Astrophysical Plasma Instabilities induced by Long-Range Interacting Dark Matter

Abstract:

If dark matter (DM) is millicharged or darkly charged, collective plasma processes may dominate momentum exchange over direct particle collisions. In particular, plasma streaming instabilities can couple the momentum of DM to counter-streaming baryons or other DM and result in the counter-streaming fluids coming to rest with each other, just as happens for baryonic collisionless shocks in astrophysical systems. While electrostatic plasma instabilities (such as the two stream) are highly suppressed by Landau damping in the cosmological situations of interest, electromagnetic instabilities such as the Weibel can couple the momenta. Their growth rates are slower than the prior assumption that they would grow at the plasma frequency of DM. We find that the streaming of DM in the pre-Recombination universe is affected more strongly by direct collisions than collective processes, validating previous constraints. However, when considering unmagnetized instabilities the properties of the Bullet Cluster merger would be substantially altered if [qχ/mχ]≳10−4[q_\chi/m_\chi] \gtrsim 10^{-4}[qχ​/mχ​]≳10−4, where [qχ/mχ][/mχ​]][qχ​/mχ​] is the charge-to-mass ratio of DM relative to that of the proton. When a magnetic field is added consistent with cluster observations, Weibel and Firehose instabilities result in the constraint [qχ/mχ]≳10−12−10−11[/mχ​]] \gtrsim 10^{-12}-10^{-11}[qχ​/mχ​]≳10−12−10−11. The constraints are even stronger in the case of a dark U(1)U(1)U(1) charge, ruling out [qχ/mχ]≳10−14[qχ/mχ​]] \gtrsim 10^{-14}[qχ​/mχ​]≳10−14 in the Bullet Cluster system. The strongest previous limits on millicharged DM arise from considering the spin down of galactic disks. We show that plasma instabilities or tangled background magnetic fields could lead to diffusive propagation of DM, weakening these spin down limits. Thus, our constraints from considering plasma instabilities are the most stringent over much of the millicharged and especially dark-charged parameter space.

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  1. FLUKA cross sections for cosmic-ray interactions with the DRAGON2 code

  2. Astrophysical Plasma Instabilities induced by Long-Range Interacting Dark Matter

  3. Observing the inner parsec-scale region of candidate neutrino-emitting blazars

  4. PeV Tau Neutrinos to Unveil Ultra-High-Energy Sources

  5. Multiwavelength search for the origin of IceCube's neutrinos

  6. Galactic diffuse gamma rays meet the PeV frontier

  7. Neutrino Masses and Mass Hierarchy: Evidence for the Normal Hierarchy

  8. Axion signatures from supernova explosions through the nucleon electric-dipole portal

  9. Fast Neutrino Conversion in Hydrodynamic Simulations of Neutrino-Cooled Accretion Disks

  10. Searching for neutrino emissions from multi-frequency sources

  11. Social distancing between particles and objects in the Universe

  12. Neutrino follow-up with the Zwicky Transient Facility: Results from the first 24 campaigns

  13. Worry No More, The Hubble Tension is Relieved: A Truly Direct Measurement of the Hubble Constant from Mooniversal Expansion

  14. Could fresh lava be (warm) dark matter?

11:45 am, Friday, March 25th

Guest: Kayla Leonard (UW–Madison)

Title: Low Energy Event Reconstruction in IceCube DeepCore

Abstract:

The reconstruction of event-level information, such as the direction or energy of a neutrino interacting in IceCube DeepCore, is a crucial ingredient to many physics analyses. Algorithms to extract this high level information from the detector’s raw data have been successfully developed and used for high energy events. In this work, we address unique challenges associated with the reconstruction of lower energy events in the range of a few to hundreds of GeV and present two separate, state-of-the-art algorithms. One algorithm focuses on the fast directional reconstruction of events based on unscattered light. The second algorithm is a likelihood-based multipurpose reconstruction offering superior resolutions, at the expense of larger computational cost.

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  1. Diffuse flux of ultra-high energy photons from cosmic-ray interactions in the disk of the Galaxy and implications for the search for decaying super-heavy dark matter

  2. Constraining ultra-high-energy cosmic ray composition through cross-correlations

  3. A ν scalar in the early universe and (g−2)μ

  4. Signatures of anisotropic diffusion around PeVatrons in 100 TeV gamma-ray data

  5. A simple determination of the halo size L from 10Be/9Be data

  6. The rigidity dependence of galactic cosmic-ray fluxes and its connection with the diffusion coefficient

  7. High-Energy Extragalactic Neutrino Astrophysics

  8. Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor

  9. Neutrino interactions with ultralight axion-like dark matter

  10. A substandard candle: the low-ν method at few-GeV neutrino energies

11:45 am, Friday, March 11th

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  1. Constraining Axion-Like Particles with HAWC Observations of TeV Blazars

  2. On the importance of Fe fragmentation for LiBeB analyses: Do we need a Li primary source to explain AMS-02 data?

  3. A compact instrument for gamma-ray burst detection on a CubeSat platform II: Detailed design, assembly and validation

  4. New Modules for the SEDMachine to Remove Contaminations from Cosmic Rays and Non-target Light: BYECR and CONTSEP

  5. Determining Atmospheric Electric Fields using MGMR3D

  6. Observable Signatures of Cosmic Rays Transport in Starburst Galaxies on Gamma-ray and Neutrino Observations

  7. Signal model and event reconstruction for the radio detection of inclined air showers

  8. A parametric approach for the identification of single-charged isotopes with AMS-02

  9. Cosmic-void observations reconciled with primordial magnetogenesis

11:45 am, Friday, March 4th

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  1. Matching resummed endpoint and continuum γ-ray spectra from dark-matter annihilation

  2. Observing Axion Emission from Supernova with Collider Detectors

  3. Constraining heavy axion-like particles by energy deposition in Globular Cluster stars

  4. Cooling of Neutron Stars admixed with Light Dark Matter: a case study

  5. Astrophysical Plasma Instabilities induced by Long-Range Interacting Dark Matter

  6. Combined significance of spatial coincidence of high energy neutrinos from PSR B1509-58 by Super-Kamiokande and MACRO

  7. Constraints on dark matter self-interaction from galactic core size

  8. On the importance of Fe fragmentation for LiBeB analyses: Do we need a Li primary source to explain AMS-02 data?

  9. An absolute ν mass measurement with the DUNE experiment

  10. The Diffuse Gamma-Ray Flux from Clusters of Galaxies

11:45 am, Friday, Feb 25th

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  1. Photon-ALP oscillations inducing modification on γ-ray polarization

  2. Photon-ALP interaction as a measure of photon polarization

  3. Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal

  4. First measurement of the absorption of 3He¯ nuclei in matter and impact on their propagation in the galaxy

  5. Radio Constraints on r-process Nucleosynthesis by Collapsars

  6. Spectra of Cosmic Ray Sodium and Aluminum and Unexpected Aluminum Excess

  7. Prospects for Distinguishing Supernova Models Using a Future Neutrino Signal

  8. Broad search for gravitational waves from subsolar-mass binaries through LIGO and Virgo’s third observing run

  9. Implications of the first evidence for coherent elastic scattering of reactor neutrinos

  10. Suggestive evidence for coherent elastic neutrino-nucleus scattering from reactor antineutrinos

11:45 am, Friday, Feb 18th

Guest: Andrea Caputo (Weizmann Institute of Science)

Title: Low-Energy Supernovae Severely Constrain Radiative Particle Decays

Abstract:

The hot and dense core formed in the collapse of a massive star is a powerful source of hypothetical feebly-interacting particles such as sterile neutrinos, dark photons, axion-like particles (ALPs), and others. Radiative decays such as a→2γ deposit this energy in the surrounding material if the mean free path is less than the radius of the progenitor star. For the first time, we use a supernova (SN) population with particularly low explosion energies as the most sensitive calorimeters to constrain this possibility. These SNe are observationally identified as low-luminosity events with low ejecta velocities and low masses of ejected 56Ni. Their low energies limit the energy deposition from particle decays to less than about 0.1 B, where 1 B (bethe)=1051 erg. For 1-500 MeV-mass ALPs, this generic argument excludes ALP-photon couplings Gaγγ in the 10−10-10−8 GeV−1 range.

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  1. Tomographic Muon Imaging of the Great Pyramid of Giza

  2. Cosmic-ray generated bubbles around their sources

  3. Blazar-Boosted Dark Matter at Super-Kamiokande

  4. A low-threshold ultrahigh-energy neutrino search with the Askaryan Radio Array

  5. Galactic halo magnetic fields and UHECR deflections

  6. Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal

  7. First measurement of the absorption of 3He¯¯¯¯¯¯ nuclei in matter and impact on their propagation in the galaxy

  8. Polarisation signatures in radio for inclined cosmic-ray induced air-shower identification

  9. Multifrequency Array Calibration in Presence of Radio Frequency Interferences

  10. Galactic center gamma-ray production by cosmic rays from stellar winds and Sgr A East

11:45 am, Friday, Feb 11th

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  1. Non-standard neutrino cosmology dilutes the lensing anomaly

  2. GB6 J2113+1121: A multi-wavelength flaring gamma-ray blazar temporally and spatially coincident with the neutrino event IceCube-191001A

  3. Anisotropies of ultrahigh-energy cosmic rays in a scenario with nearby sources

  4. PKS 1424+240: yet another masquerading BL Lac object as a possible IceCube neutrino source

  5. Diffuse Galactic emission spectrum between 0.5 and 8.0 MeV

  6. High-Energy Neutrinos from Active Galactic Nuclei

  7. Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments

  8. Propagation of cosmic rays in plasmoids of AGN jets -- implications for multimessenger predictions

  9. White dwarfs as Physics laboratories: lights and shadows

  10. GB6 J2113+1121: A multi-wavelength flaring gamma-ray blazar temporally and spatially coincident with the neutrino event IceCube-191001A

11:45 am, Friday, Feb 4th

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  1. A novel search for high-frequency gravitational waves with low-mass axion haloscopes

  2. Prospects for the detection of the Diffuse Supernova Neutrino Background with the experiments SK-Gd and JUNO

  3. Contribution to the extragalactic neutrino background from dense environment of GRB jets

  4. High energy neutrinos from fast winds in Novae

  5. First limits on neutrino electromagnetic properties from the CONUS experiment

  6. Primordial Black Hole Dark Matter in the Context of Extra Dimensions

  7. Neutrino point source searches for dark matter spikes

  8. IceCube and High-Energy Cosmic Neutrinos

11:30 am, Friday, Jan 28th

Guest: Kanji Mori (Research Institute of Stellar Explosive Phenomena, Fukuoka University)

Title: Shock Revival in Core-collapse Supernovae Assisted by Heavy Axion-like Particles

Abstract:

Axion-like particles (ALPs) are a class of hypothetical pseudoscalar particles which feebly interact with ordinary matter. The hot plasma of stars and core-collapse supernovae is a possible laboratory to explore physics beyond the standard model including ALPs. Once produced in a supernova, some of the ALPs can be absorbed by the supernova matter and affect energy transfer. We recently calculated the ALP emission in core-collapse supernovae and the backreaction on supernova dynamics consistently. It is found that the stalled bounce shock can be revived if the coupling between ALPs and photons is as high as $g_{a\gamma}\sim 10^{-9}$ GeV$^{-1}$ and the ALP mass is 40-400 MeV.

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  1. Shock Revival in Core-collapse Supernovae Assisted by Heavy Axion-like Particles

  2. Milky Way Satellite Census. IV. Constraints on Decaying Dark Matter from Observations of Milky Way Satellite Galaxies

  3. Simulation of Nuclear Recoils due to Supernova Neutrino-induced Neutrons in Liquid Xenon Detectors

  4. Cosmic rays in molecular clouds probed by H2 rovibrational lines -- Perspectives for the James Webb Space Telescope

  5. Inference of bipolar neutrino flavor oscillations near a core-collapse supernova, based on multiple measurements at Earth

  6. Squeezing Cosmological Phase Transitions with International Pulsar Timing Array

  7. Leptogenesis from a feebly interacting dark matter sector

  8. Low-Energy Supernovae Severely Constrain Radiative Particle Decays

  9. Inelastic Dirac Dark Matter

  10. γ-ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC

  11. High energy neutrinos from fast winds in Novae

  12. Constrains of the axion-like particle from black hole spin superradiance

  13. Search for solar atmospheric neutrinos with the ANTARES neutrino telescope

11:45 am, Friday, Jan 21st

Guest: Anna Suliga (Bohr Inst., UC, Berkeley, Wisconsin U., Madison, and DARK Cosmology Ctr.)

Title: Towards Probing the Diffuse Supernova Neutrino Background in All Flavors

Abstract:

Fully understanding the average core-collapse supernova requires detecting the diffuse supernova neutrino background (DSNB) in all flavors. While the DSNB \bar{νe} flux is near detection, and the DSNB νe flux has a good upper limit and promising prospects for improved sensitivity, the DSNB νx (each of νμ, ντ, \bar{νμ}, \bar{ντ}) flux has a poor limit and heretofore had no clear path for improved sensitivity. We show that a succession of xenon-based dark matter detectors -- XENON1T (completed), XENONnT (under construction), and DARWIN (proposed) -- can dramatically improve sensitivity to DSNB νx the neutrino-nucleus coherent scattering channel. XENON1T could match the present sensitivity of ∼ 10^3 cm^(−2) s^(−1) per νx flavor, XENONnT would have linear improvement of sensitivity with exposure, and a long run of DARWIN could reach a flux sensitivity of ∼ 10 cm^(−2) s^(−1). Together, these would also contribute to greatly improve bounds on non-standard scenarios. Ultimately, to reach the standard flux range of ∼ 1 cm^(−2) s^(−1), even larger exposures will be needed, which we show may be possible with the series of proposed lead-based RES-NOVA detectors.

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  1. Variable Ion Compositions of Solar Energetic Particle Events in the Inner Heliosphere: A Field-line Braiding Model with Compound Injections

  2. The End of Expansion

  3. Extragalactic Cosmic Rays

  4. Dark matter scattering in astrophysical media: collective effects

  5. Dark radiation constraints on light primordial black holes

  6. Is magnetically dominated outflow required to explain GRBs?

11:45 am, Friday, Jan 14th

Guest: Yu-Dai Tsai (UC, Irvine and Fermilab and Chicago U. ,KICP)

Title: SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

Abstract:

Recent advances in quantum sensors, including atomic clocks, enable searches for a broad range of dark matter candidates. The question of the dark matter distribution in the Solar system critically affects the reach of dark matter direct detection experiments. Partly motivated by the NASA Deep Space Atomic Clock (DSAC), we show that space quantum sensors present new opportunities for ultralight dark matter searches, especially for dark matter states bound to the Sun. We show that space quantum sensors can probe unexplored parameter space of ultralight dark matter, covering theoretical relaxion targets motivated by naturalness and Higgs mixing. If an atomic clock were able to make measurements on the interior of the solar system, it could probe this highly sensitive region directly and set very strong constraints on the existence of such a bound-state halo in our solar system. We present sensitivity projections for space-based probes of ultralight dark matter which couples to electron, photon, and gluon fields, based on current and future atomic, molecular, and nuclear clocks.

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  1. SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

  2. Helium fluxes measured by the PAMELA experiment from the minimum to the maximum solar activity for solar cycle 24

  3. [Nature] Star formation near the Sun is driven by expansion of the Local Bubble

  4. Simulation Study of the Relative Askaryan Fraction at the South Pole

  5. Radiation Effects from ISM and Cosmic Ray Particle Impacts on Relativistic Spacecraft

  6. Galactic gamma-ray and neutrino emission from interacting cosmic-ray nuclei

  7. Ultrahigh-energy Gamma-Ray Radiation from the Crab Pulsar Wind Nebula

11:45 am, Friday, Jan 7th

Guest: Federica Bradascio (IRFU, Saclay)

Title: A search for neutrino emission from cores of Active Galactic Nuclei

Abstract:

The sources of the majority of the high-energy astrophysical neutrinos observed with the IceCube neutrino telescope at the South Pole are unknown. So far, only a gamma-ray blazar was compellingly associated with the emission of high-energy neutrinos. In addition, several studies suggest that the neutrino emission from the gamma-ray blazar population only accounts for a small fraction of the total astrophysical neutrino flux. In this work we probe the production of high-energy neutrinos in the cores of Active Galactic Nuclei (AGN), induced by accelerated cosmic rays in the accretion disk region. We present a likelihood analysis based on eight years of IceCube data, searching for a cumulative neutrino signal from three AGN samples created for this work. The neutrino emission is assumed to be proportional to the accretion disk luminosity estimated from the soft X-ray flux. Next to the observed soft X-ray flux, the objects for the three samples have been selected based on their radio emission and infrared color properties. For the largest sample in this search, an excess of high-energy neutrino events with respect to an isotropic background of atmospheric andastrophysical neutrinos is found, corresponding to a post-trial significance of 2.60 sigma. . Assuming a power-law spectrum, the best-fit spectral index is 2.03^{+0.14}_{-0.11}, consistent with expectations from particle acceleration in astrophysical sources. If interpreted as a genuine signal with the assumptions of a proportionality of X-ray and neutrino fluxes and a model for the sub-threshold flux distribution, this observation implies that at 100 TeV, 27% - 100% of the observed neutrinos arise from particle acceleration in the core of AGN.

Guest: Simeon Reusch (DESY)

Title: Neutrinos from tidal disruption and accretion events

Abstract:

The origins of the high-energy cosmic neutrino flux remain largely unknown. Last year, a high-energy neutrino was associated with the tidal disruption event (TDE) AT2019dsg by our group. I will present AT2019fdr, an exceptionally luminous TDE candidate, coincident with another high-energy neutrino detected by IceCube. I will present observations that further support a TDE origin of this flare. These include a bright dust echo and soft late-time X-ray emission. The probability of finding two such bright events in neutrino follow-up by chance is just 0.034%. Furthermore, we have evaluated several models for neutrino production and can show that AT2019fdr is capable of producing the observed high-energy neutrino. I will also present further evidence on accretion events accompanied by luminous dust echoes being connected to high-energy neutrinos, as we have found another event with such a signature coincident with a high-energy neutrino (AT2019aalc). This reinforces the case for TDEs as neutrino sources.

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  1. A search for neutrino emission from cores of Active Galactic Nuclei

  2. The candidate tidal disruption event AT2019fdr coincident with a high-energy neutrino

  3. Towards Probing the Diffuse Supernova Neutrino Background in All Flavors

  4. Luminosity functions consistent with a pulsar-dominated Galactic Center Excess

  5. The Return of the Templates: Revisiting the Galactic Center Excess with Multi-Messenger Observations

  6. Solar mass black holes from neutron stars and bosonic dark matter

  7. Revisiting the constraints on primordial black hole abundance with the isotropic gamma ray background

  8. Measurement of UV light emission of the nighttime Earth by Mini-EUSO for space-based UHECR observations

  9. Diffuse flux of PeV neutrinos from centrifugally accelerated protons in active galactic nuclei

  10. Capture of Dark Matter in Neutron Stars

2021

11:45 am, Friday, Dec 17th

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  1. Analysis of a Tau Neutrino Origin for the Near-Horizon Air Shower Events Observed by the Fourth Flight of the Antarctic Impulsive Transient Antenna (ANITA)

  2. Shock Revival in Core-collapse Supernovae Assisted by Heavy Axion-like Particles

  3. Tau Appearance from High-Energy Neutrino Interactions

  4. The Spectra of IceCube Neutrino (SIN) candidate sources - II. Source Characterisation

  5. Reconciling ultra-high-energy diffuse γ-rays and the knee of cosmic ray light nuclei

  6. A search for correlated low-energy electron antineutrinos in KamLAND with gamma-ray bursts

  7. Navigating the pitfalls of relic neutrino detection

  8. Astrophysical Neutrinos and Blazars


11:45 am, Friday, Dec 10th

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  1. Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies

  2. Standard Self-Confinement and Extrinsic Turbulence Models for Cosmic Ray Transport are Fundamentally Incompatible with Observations

  3. Measuring the Polarization Reconstruction Resolution of the ARIANNA Neutrino Detector with Cosmic Rays

  4. Numerical Study of Cosmic Ray Confinement through Dust Resonant Drag Instabilities

  5. A Model-Independent Radio Telescope Dark Matter Search

  6. Using Evolutionary Algorithms to Design Antennas with Greater Sensitivity to Ultra High Energy Neutrinos

  7. Space applications of GAGG:Ce scintillators: a study of afterglow emission by proton irradiation

  8. Audio Universe Tour of the Solar System: using sound to make the Universe more accessible

  9. Identifying mass composition of ultra-high-energy cosmic rays using deep learning

  10. Improving sensitivity of the ARIANNA detector by rejecting thermal noise with deep learning


11:45 am, Friday, Dec 3rd

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Guest: Payel Mukhopadhyay (Stanford)

Title: Supernova outflows - From Hydrodynamics to Nucleosynthesis

Abstract:

Neutrino driven outflow hydrodynamics in core-collapse supernovae can have a profound impact on the detectable neutrino oscillation signatures. Additionally, the hydrodynamics of these outflows impact the yields of p-nuclides such as Molybdenum and Ruthenium whose abundance in solar system is a mystery. In this talk, I show that neutrino driven outflows possess a special property known as near-criticality which, in turn impacts the observed neutrino signals in DUNE. Additionally, I show that a self-consistent treatment of outflow hydrodynamics also makes core-collapse supernovae an attractive candidate for the so called nu p- process, proving clue to the origin of isotopes like 92,94 Mo and 96,98 Ru in the Solar System.

  1. MicroBooNE and the νe Interpretation of the MiniBooNE Low-Energy Excess

  2. Observation of Variations in Cosmic Ray Single Count Rates During Thunderstorms and Implications for Large-Scale Electric Field Changes

  3. Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

  4. Search for GeV-scale Dark Matter Annihilation in the Sun with IceCube DeepCore

  5. Improved Characterization of the Astrophysical Muon-Neutrino Flux with 9.5 Years of IceCube Data

  6. Unveiling the Fermi Bubbles origin with MeV photon telescopes

  7. A search for neutrino emission from cores of Active Galactic Nuclei

  8. The candidate tidal disruption event AT2019fdr coincident with a high-energy neutrino

  9. UHECR arrival directions in the latest data from the original Auger and TA surface detectors and nearby galaxies

  10. Audible Axions with a Booster: Stochastic Gravitational Waves from Rotating ALPs

  11. A Compact High-Resolution Muon Spectrometer Using Multi-Layer Gas Cherenkov Radiators

  12. Cosmic Neutrino Background Detection in Large-Neutrino-Mass Cosmologies

  13. Search for Low-Energy Signals from Fast Radio Bursts with the Borexino Detector


11:45 am, Friday, Nov 19th

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Guest: Anupam Ray (Tata Institute Of Fundamental Research)

Title: Unravelling the Mystery of Dark Matter with Black Holes

Abstract:

Primordial black holes (PBHs), possibly formed via gravitational collapse of large density perturbations in the very early universe, are one of the earliest proposed and viable dark matter (DM) candidates. PBHs can make up a large or even entirety of DM over a wide range of masses. Ultralight PBHs in the mass range of 10^{15} - 10^{17} g, emit particles via Hawking radiation, act as a decaying DM, and can be probed via observations of those emitted particles in various space as well as ground based detectors. In this talk, I will discuss how diffuse supernova neutrino background searches at the Super-Kamiokande neutrino observatory, measurement of the 511 keV gamma-ray line by INTEGRAL telescope, observations of low energy Galactic Center photons by the imminent soft gamma-ray telescope AMEGO, and EDGES measurement of the global 21-cm signal can set robust, world-leading exclusions on the fraction of DM composed of ultralight PBHs. Finally, I will also discuss a novel formation mechanism of low mass transmuted black holes which can be a viable non-primordial solution to sub-Chandrasekhar mass, pointing out several avenues to test the transmuted origin of low mass black holes.


Guest: Yuanhong Qu (University of Nevada, Las Vegas)

Title: Neutrino emission from FRB-emitting magnetars

Abstract:

The detection of FRB 200428 in association with a hard X-ray burst from the Galactic magnetar SGR 1935+2154 suggests that magnetars can make FRBs.We study possible neutrino emission from FRB-emitting magnetars by developing a general theoretical framework. We consider three different sites for proton acceleration and neutrino emission, i.e. within the magnetosphere, in the current sheet region beyond the light cylinder, and in relativistic shocks far away from the magnetosphere. All three scenarios can allow protons to be accelerated to high enough energies to interact with 10 − 200 keV X-ray photons to produce neutrinos. Different cooling processes for protons and pions are considered to calculate the neutrino emission suppression factor within each scenario. We find that the flux of the neutrino emission decreases with increasing radius from the magnetar due to the decrease of the target photon number density. We calculate the neutrino flux from FRB 200428 and its associated X-ray burst. The flux of the most optimistic case invoking magnetospheric proton acceleration is still ∼ 4 orders of magnitude below the IceCube sensitivity. We also estimate the diffuse neutrino background from all FRB-emitting magnetars in the universe. The total neutrino flux of magnetars during their FRB emission phases is a negligible fraction of observed diffuse emission even under the most optimistic magnetospheric scenario for neutrino emission. However, if one assumes that many more X-ray bursts without FRB associations can also produce neutrinos with similar mechanisms, magnetars can contribute up to 10^(−8) GeV s^(−1) sr^(−1) cm^(−2) diffuse neutrino background flux in the GeV to multi-TeV range. Future detection or non-detection of neutrinos from bright Galactic magnetar-associated FRBs may provide a diagnosis on the particle acceleration site in FRB-emitting magnetars.


  1. Neutrino emission from FRB-emitting magnetars

  2. The Contribution From TeV Halos to the Isotropic Gamma-Ray Background

  3. Galactic rotation curves vs. ultralight dark matter II

  4. Saturation of the asymmetric current filamentation instability under conditions relevant to relativistic shock precursors

  5. Search for Quantum Gravity Using Astrophysical Neutrino Flavour with IceCube

  6. Fermi-LAT detection of extended gamma-ray emission in the vicinity of SNR G045.7−00.4: evidence for escaping cosmic rays interacting with the surrounding molecular clouds

  7. Turbulence and particle acceleration in a relativistic plasma

  8. Shock acceleration with oblique and turbulent magnetic fields

  9. The SLAC T-510 experiment for radio emission from particle showers: detailed simulation study and interpretation

For suggestions of cool papers on arXiv, email me: esteban.6(-@-)osu.edu


11:45 am, Friday, Nov 12th

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Guest: Rostom Mbarek (University of Chicago)

Title: Ultra-High-Energy Cosmic Rays and Neutrinos from relativistic jets of Active Galactic Nuclei

Abstract:

In Mbarek & Caprioli (2019), we laid the groundwork for studying the espresso paradigm Caprioli (2015), a reacceleration mechanism to boost galactic cosmic rays (CRs) to Ultra-High-Energy CR (UHECR) levels. Our bottom-up approach uses realistic 3D MHD simulations of relativistic AGN jets and accounts for all of the crucial ingredients of a universal acceleration theory: injection, acceleration, and escape in realistic environments. Our results are consistent with the main features of UHECR spectra, i.e., power-law slopes, chemical composition, and anisotropy. In Mbarek & Caprioli (2021), we refine our model by including sub-grid particle scattering to model small-scale magnetic turbulence that cannot be resolved by MHD simulations, constraining for the first time one crucial but hard-to-model ingredient, and allowing us to establish the relative importance of espresso and stochastic shear acceleration in relativistic jets. Here, we analyze high-energy neutrinos produced from our accelerated UHECRs considering the effects of external photon fields, and incorporate nucleus photodisintegration. We find that UHECRs are not significantly affected by photodisintegration in AGN jets, which is consistent with Auger's detection of heavy elements at the highest energies. We also note that the source neutrino flux at E>1e17 eV is comparable to that of cosmogenic neutrinos, and that the steady neutrino emission from AGN jets cannot solely account for IceCube's signal.

  1. The SLAC T-510 experiment for radio emission from particle showers: detailed simulation study and interpretation

  2. Shock acceleration with oblique and turbulent magnetic fields

  3. Turbulence and particle acceleration in a relativistic plasma

  4. Fermi-LAT detection of extended gamma-ray emission in the vicinity of SNR G045.7−00.4

  5. Search for Quantum Gravity Using Astrophysical Neutrino Flavour with IceCube

  6. Neutrino emission from FRB-emitting magnetars

  7. The Contribution From TeV Halos to the Isotropic Gamma-Ray Background

  8. Galactic cosmic ray propagation through M dwarf planetary systems

  9. Charting nearby stellar systems: The intensity of Galactic cosmic rays for a sample of solar-type stars


11:45 am, Friday, Nov 5th

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  1. Impact of biaxial birefringence on signal polarization in radio detection of neutrinos in polar ice

  2. Direct Detection of Hawking Radiation from Asteroid-Mass Primordial Black Holes

  3. pp Solar Neutrinos at DARWIN

  4. Premature Black Hole Death of Population III Stars by Dark Matter

  5. Muonphilic Dark Matter explanation of gamma-ray galactic center excess: a comprehensive analysis

  6. Self-Generated Cosmic-Ray Turbulence Can Explain the Morphology of TeV Halos

  7. On the Origin of Pulsar and Magnetar Magnetic Fields

  8. A Helioscope for Gravitationally Bound Millicharged Particles

  9. On the nature of the mass-gap object in the GW190814 event


11:45 am, Friday, Oct 29th via Zoom

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Guest: Pedro Machado (Fermilab)

Title: Atmospheric neutrinos at DUNE

Abstract:

In this talk I will discuss how DUNE can leverage its liquid argon time projection chamber (LArTPC) technology to study atmospheric neutrinos. Because of the event reconstruction in LArTPCs, DUNE can use the large atmospheric neutrino flux below 1 GeV to do several physics analysis, including CP violation and Earth tomography.

Guest: Javier Acevedo (Queen's U)

Title: Detecting Composite Dark Matter with Bremsstrahlung and the Migdal Effect

Abstract:

An intriguing possibility for dark matter is that it formed bound states in the early Universe, much like the Standard Model fundamental particles formed nucleons, nuclei, and atoms, in a scenario called “composite” dark matter. One of the simplest composite dark matter models consists of dark matter fermions bound together by a real scalar field. Composite states that are massive enough source a scalar field so intense that nuclei, when coupled to this binding field, accelerate upon contact to energies capable of various collisional processes, including ionization, thermal bremsstrahlung, and even nuclear fusion. Such observable effects occur even when the coupling between nuclei and the binding field is vanishingly small, and have implications for the detection of dark matter through experiments as well as astrophysical observations. In this talk, I will discuss the detection prospects for these composite states by considering the Migdal effect at dark matter direct detection experiments, and thermal bremsstrahlung at large neutrino observatories.

  1. DUNE atmospheric neutrinos: Earth Tomography

  2. Accelerating Composite Dark Matter Discovery with Nuclear Recoils and the Migdal Effect

  3. Search for an Excess of Electron Neutrino Interactions in MicroBooNE Using Multiple Final State Topologies

  4. Search for an anomalous excess of inclusive charged-current νe interactions in the MicroBooNE experiment using Wire-Cell reconstruction

  5. Search for an anomalous excess of charged-current νe interactions without pions in the final state with the MicroBooNE experiment

  6. Search for an anomalous excess of charged-current quasi-elastic νe interactions with the MicroBooNE experiment using Deep-Learning-based reconstruction

  7. Background of radio photons from primordial black holes

  8. Molecular Chemistry for Dark Matter II: Recombination, Molecule Formation, and Halo Mass Function in Atomic Dark Matter

  9. A Test for Cosmological Parity Violation Using the 3D Distribution of Galaxies

  10. Observational constraints on the maximum energies of accelerated particles in supernova remnants: low maximum energies and a large variety


11:45 am, Friday, Oct 22nd via Zoom

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Guest: Tarak Nath Maity (Indian Institute of Science)

Title: A search for dark matter using sub- PeV γ-rays observed by Tibet ASγ

Abstract:

The discovery of diffuse sub-PeV gamma-rays by the Tibet ASγ collaboration promises to revolutionize our understanding of the high-energy astrophysical universe. It has been shown that this data broadly agrees with prior theoretical expectations. In this talk, we will explore the impact of this discovery on a well-motivated new physics scenario: PeV-scale decaying dark matter (DM). Considering a wide range of final states in DM decay, a number of DM density profiles, and numerous astrophysical background models, we find that this data provides the most stringent limit on DM lifetime for various Standard Model final states. In particular, we find that the strongest constraints are derived for DM masses in between a few PeV to few tens of PeV.

  1. Dimuons in Neutrino Telescopes: New Predictions and First Candidates in IceCube

  2. Mirror diffusion of cosmic rays in highly compressible turbulence near supernova remnants

  3. Impact of biaxial birefringence on signal polarization in radio detection of neutrinos in polar ice

  4. Direct Detection of Hawking Radiation from Asteroid-Mass Primordial Black Holes


11:45 am, Friday, Oct 8th via Zoom

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Guest: Julia Gehrlein (BNL)

Title: Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter

Abstract:

The formation of ultra rare supermassive black holes (SMBHs), with masses of O(10^9 M⊙), in the first billion years of the Universe remains an open question in astrophysics. At the same time, ultralight dark matter (DM) with mass in the vicinity of O(10^(−20) eV) has been motivated by small scale DM distributions. Though this type of DM is constrained by various astrophysical considerations, certain observations could be pointing to modest evidence for it. We present a model with a confining first order phase transition at ∼ 10 keV temperatures, facilitating production of O(10^9 M⊙) primordial SMBHs. Such a phase transition can also naturally lead to the implied mass for a motivated ultralight axion DM candidate, suggesting that SMBHs and ultralight DM may be two sides of the same cosmic coin. We consider constraints and avenues to discovery from superradiance and a modification to Neff . On general grounds, we also expect primordial gravitational waves – from the assumed first order phase transition – characterized by frequencies of O(10^(−12) − 10^(−9) Hz). This frequency regime is largely uncharted, but could be accessible to pulsar timing arrays if the primordial gravitational waves are at the higher end of this frequency range, as could be the case in our assumed confining phase transition.


  1. Core-collapse, evaporation and tidal effects: the life story of a self-interacting dark matter subhalo

  2. Detailed Calculation of Primordial Black Hole Formation During First-Order Cosmological Phase Transitions

  3. Exclusion limits on Dark Matter-Neutrino Scattering Cross-section


11:45 am, Friday, Oct 1st via Zoom

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  1. Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos

  2. Galactic Cosmic Ray Acceleration with Steep Spectra

  3. Reconciling Cosmic-Ray Transport Theory with Phenomenological Models Motivated by Milky-Way Data

  4. The NANOGrav 12.5-year data set: Search for Non-Einsteinian Polarization Modes in theGravitational-Wave Background

  5. Binary black hole mergers from young massive clusters in the pair-instability supernova mass gap

  6. Constraining Time Dependent Dark Matter Signals from the Sun

  7. Neutrino Echos following Black Hole Formation in Core-Collapse Supernovae

  8. The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory

  9. Search for Relativistic Magnetic Monopoles with Eight Years of IceCube Data

  10. First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills

  11. Nuclear fusion catalyzed by doubly charged scalars: Implications for energy production


11:45 am, Friday, Sep 24th via Zoom

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Guest: Nirmal Raj (TRIUMF)

Title: Dark Matter Direct Detection in an Inter-Clump Void

Abstract:

On sub-kiloparsec scales dark matter could cluster and form compact subhalos, in which the majority of Galactic dark matter could reside. Null results in direct detection experiments since their advent four decades ago could then be the result of extremely rare encounters between the Earth and these subhalos. I present alternative and promising means to identify subhalo dark matter interacting with Standard Model particles: (1) subhalo collisions with old neutron stars can transfer kinetic energy and brighten the latter to luminosities within the reach of imminent infrared, optical, and ultraviolet telescopes; this already sets bounds on self-interacting dark matter in subhalos from the coldest known neutron star, (2) subhalo dark matter scattering with cosmic rays results in detectable effects, (3) historic Earth-subhalo encounters can leave dark matter tracks in paleolithic minerals deep underground. These searches, which are highly complementary to microlensing surveys, could discover dark matter subhalos over vast parametric ranges, between the masses of a typical lake and a typical star, with corresponding dark matter cross sections and masses spanning tens of orders of magnitude.


  1. Scattering searches for dark matter in subhalos: neutron stars, cosmic rays, and old rocks

  2. Dark Matter Hot Spots and Neutrino Telescopes

  3. Can Primordial Black Holes as all Dark Matter explain Fast Radio Bursts?

  4. An Altarelli Cocktail for the MiniBooNE Anomaly?

  5. LC Circuits for the Direct Detection of Ultralight Dark Matter Candidates

  6. A comprehensive search for the radio counterpart of GW190814 with the Australian Square Kilometre Array Pathfinder

  7. First Predicted Cosmic Ray Spectra, Primary-to-Secondary Ratios, and Ionization Rates from MHD Galaxy Formation Simulations

  8. Nonlinear particle reacceleration by multiple shocks

  9. Magnetic topology in coupled binaries, spin-orbital resonances, and flares

  10. Charting nearby stellar systems: The intensity of Galactic cosmic rays for a sample of solar-type stars


For suggestions of cool papers on arXiv, email me: esteban.6(-@-)osu.edu


11:45 am, Friday, Sep 10th via Zoom

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  1. Non-thermal emission from young supernova remnants in dense circumstellar environments

  2. Scattering searches for dark matter in subhalos: neutron stars, cosmic rays, and old rocks

  3. Directional Detection of Light Dark Matter in Superconductors

  4. Predicting the Magnetic Fields of a Stealth CME Detected by Parker Solar Probe at 0.5 AU

  5. Muonic Boson Limits: Supernova Redux

  6. Cosmological search for sterile neutrinos after Planck 2018

  7. Testing Self-Organized Criticality Across the Main Sequence using Stellar Flares from TESS

  8. Can Primordial Black Holes as all Dark Matter explain Fast Radio Bursts?

  9. Dark Matter Hot Spots and Neutrino Telescopes

  10. The diffuse γ-ray background is dominated by star-forming galaxies

  11. LHAASO discovery of highest-energy photons towards new physics

  12. Dark matter transient annihilations in the early Universe


11:45 am, Friday, Sep 10th via Zoom

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  1. Probing Current Sheet Instabilities from Flare Ribbon Dynamics

  2. Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter

  3. Search for dark matter annihilation signals from UFOs with H.E.S.S

  4. Overview of Cherenkov Telescope on-board EUSO-SPB2 for the Detection of Very-High-Energy Neutrinos

  5. Theory of magnetic flux tubes in strong fields and the phenomenon of dark matter axions identical to solar axions

  6. Magnetic loading of magnetars' flares

  7. What powers the radio emission in TDE AT2019dsg: a long-lived jet or the disruption itself?

  8. Dark Matter Microhalos in the Solar Neighborhood: Pulsar Timing Signatures of Early Matter Domination

  9. Reticulum II: Particle Dark Matter and Primordial Black Holes Limits

11:45 am, Friday, Sep 3rd via Zoom

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Guest: Daichi Tsuna (Tokyo U)

Title: Observing the Traces of Black Hole Formation

Abstract:

Failed explosion of massive stars is considered to be the main channel to form stellar-mass black holes seen in electromagnetic and gravitational waves. Though we likely cannot see these events as spectacular supernovae, mass ejection can still occur due to weakening of gravity when the central core emits neutrinos. In this talk I will discuss our recent predictions on the observational consequence of these events, focusing on emission when the ejected material sweeps up the surrounding matter.

  1. Combined dark matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS

  2. Detecting Axion Dark Matter through the Radio Signal from Omega Centauri

  3. FAST discovery of an extremely radio-faint millisecond pulsar from the Fermi-LAT unassociated source 3FGL J0318.1+0252

  4. Investigating the energy distribution of the high-energy particles in the Crab nebula

11:45 am, Friday, Aug 27th via Zoom

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Guest: Jose Carpio (PSU)

Title: High-energy cosmic neutrinos as a probe of the vector mediator scenario in light of the muon g − 2 anomaly and Hubble tension

Abstract:

In light of the recent Muon g − 2 experiment data from Fermilab, we investigate the implications of a gauged Lµ − Lτ model for high energy neutrino telescopes. It has been suggested that a new gauge boson at the MeV scale can both account for the Muon g −2 data and alleviate the tension in the Hubble parameter measurements. It also strikes signals at IceCube from the predicted resonance scattering between high-energy neutrinos and the cosmic neutrino background. We revisit this model based on the latest IceCube shower data, and perform a four-parameter fit to find a preferred region. While the data are consistent with the absence of resonant signatures from secret interactions, we find the preferred region consistent with the muon g − 2 anomaly and Hubble tension. We demonstrate that future neutrino telescopes such as IceCube-Gen2 can probe this unique parameter space, and point out that successful measurements would infer the neutrino mass with 0.05 eV <~ Σmν <~ 0.3 eV.

  1. Comparison of simulated neutrino emission models with data on Supernova 1987A

  2. Search for dark matter annihilation signals from the Galactic Center with the H.E.S.S. Inner Galaxy Survey

  3. First direct detection constraints on Planck-scale mass dark matter with multiple-scatter signatures using the DEAP-3600 detector

  4. THE UNCERTAIN FUTURE OF MASSIVE BINARIES OBSCURES THE ORIGIN OF LIGO/VIRGO SOURCES

11:45 am, Friday, Aug 20th via Zoom

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with the passcode: 984288

Guest: Anirban Das (SLAC)

Title: 'Direct Detection' of Dark Asteroids

Abstract:

Macroscopic dark matter is mostly unconstrained over a wide asteroid-mass range, where it could scatter on visible matter with geometric cross section. In this talk, I shall describe when such a 'dark asteroid' travels through a star, it produces shock waves which reach the stellar surface, and gives out distinctive transient optical, UV and X-ray emission. This signature can be searched for on a variety of stellar types and locations. In a dense globular cluster, such events occur far more often than stellar flares. An existing UV telescope, such as the Hubble Telescope, could probe orders of magnitude in dark asteroid mass in one week of dedicated observation.

  1. Stellar Shocks From Dark Matter

  2. Flavor-specific Interaction Favors StrongNeutrino Self-coupling in the Early Universe

  3. Comment on “New Freezeout Mechanism for Strongly Interacting Dark Matter”

  4. Ultrahigh energy cosmic rays and high energy astrophysical neutrinos

  5. Understanding and visualizing the statistical analysis of SN1987A neutrino data

  6. An Archival Search for Very-High-Energy Counterparts to Sub-Threshold Neutron-Star Merger Candidates

  7. Neutrino Interactions in the Late Universe

  8. A Posterior Analysis on IceCube Double Pulse TauNeutrino Candidates

  9. Particle Physics with the Pierre Auger Observatory

11:45 am, Friday, August 13 via Zoom

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with the ID: 994 3702 4737 and password: 102987

  1. Probing Secret Interactions of Astrophysical Neutrinos in the High-Statistics Era

  2. Dark Matter from Axion Strings with Adaptive Mesh Refinement

  3. Gravitational waves from melting cosmic strings

  4. EDGES data as a signal of the Stueckelberg mechanism in the early universe

  5. Dark QED from Inflation

  6. Electroweak baryogenesis from light fermion sources: a critical study

  7. RG Flow and Symmetry Breaking in a Weakly Coupled Model

  8. Cosmologically Degenerate Fermions

  9. Dark matter capture and annihilation in stars: Impact on the red giant branch tip

11:45 am, Friday, August 7 via Zoom

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with the ID: 993 1044 3456 and password: 451761

  1. Probing Secret Interactions of Astrophysical Neutrinos in the High-Statistics Era

  2. General Freeze-in and Freeze-out

  3. Massive gravitons as FIMP dark matter candidates

  4. A dark matter WIMP that can be detected and definitively identified with currently planned experiments

  5. Clean energy from dark matter?

  6. Filtered asymmetric dark matter during the Peccei-Quinn phase transition

  7. The Secret Higgstory of the Highest Temperature during Reheating

  8. Constraints on heavy decaying dark matter with current gamma-ray measurements

11:45 am, Friday, July 30th via Zoom

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Zoom ID: 915 9772 6964

with the password: 659271

Guest: Mike Pajkos (MSU)

Title: Interpreting Core-collapse Multimessenger Signals Using Supernova Simulations

Abstract:

As some of the most energetic events in the universe, core-collapse supernovae (CCSNe) act as effective laboratories for many areas of physics that occur on a variety of length scales. With electromagnetic and multimessenger observatories constantly improving sensitivities, astronomers stand poised to constrain the physics within these high energy laboratories using a variety of signals. This talk reviews results from high-fidelity multiphysics simulations, connecting the expected gravitational waves produced in a core-collapse event to the internal supernova physics. Likewise, it highlights relationships between the neutrino production and the CCSN evolution. Lastly, this talk outlines additions to the FLASH multiphysics code that improve the predictive power of numerical models for supernova multimessenger signals.

11:45 am, Friday, July 23th via Zoom

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with the password: 358863

  1. Closing the window on WIMP Dark Matter

  2. Flavor-Violating Higgs Decays andStellar Cooling Anomalies in Axion Models

  3. Gravitational wave echoes from interacting quark stars

  4. Gamma-ray line from electroweakly interactingnon-abelian spin-1 dark matter

  5. The Simplest and Most Predictive Model of Muong−2and Thermal Dark Matter

  6. Dark Lepton Superfluid in Proto-Neutron Stars

  7. Towards a Higgs mass determination in asymptoticallysafe gravity with a dark portal

  8. Probing dark gauge boson with observations fromneutron stars

  9. On the Realization of WIMPflation

  10. Axion-photon conversion in stronglymagnetised plasmas

  11. Asymptotic Safety: Swampland or Wonderland?

11:45 am, Friday, July 16th via Zoom

Use this link to access the meeting: ZOOM

  1. Complementarity between dark matter direct searches and CEνNS experiments in U(1)′ models

  2. Indirect Searches for Secluded Dark Matter

  3. Searching for Dark Matter in the Sun using Hyper-Kamiokande

  4. The Mass Distribution of Neutron Stars in Gravitational-Wave Binaries

  5. Bridging the μHz gap in the gravitational-wave landscape with binary resonance

  6. Dark Lepton Superfluid in Proto-Neutron Stars

  7. Constraining positron emission from pulsar populations with AMS-02 data

  8. Axion-photon conversion in strongly magnetised plasmas

  9. Neutrino Telescope in Lake Baikal: Present and Nearest Future

  10. Asteroid g-2 experiments: new fifth force and ultralight dark sector tests

11:45 am, Friday, July 9th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 55688

Guest: Claire Guépin (UMD)

Title: Indirect dark matter searches at ultrahigh energy neutrino detectors

Abstract:

High to ultrahigh energy neutrino detectors can uniquely probe the properties of dark matter χ by searching for the secondary products produced through annihilation and/or decay processes. We evaluate the sensitivities to dark matter thermally averaged annihilation cross section <σv> and partial decay width into neutrinos Γχ→νν¯ (in the mass scale 10^7 ≤ mχ/GeV ≤ 10^15) for next generation observatories like POEMMA and GRAND. We show that in the range 10^7 ≤ mχ/GeV ≤ 10^11, space-based Cherenkov detectors like POEMMA have the advantage of full-sky coverage and rapid slewing, enabling an optimized dark matter observation strategy focusing on the Galactic center. We also show that ground-based radio detectors such as GRAND can achieve high sensitivities and high duty cycles in radio quiet areas. We compare the sensitivities of next generation neutrino experiments with existing constraints from IceCube and updated 90% C.L. upper limits on <σv> and Γχ→νν¯ using results from the Pierre Auger Collaboration and ANITA. We show that in the range 10^7 ≤ mχ/GeV ≤ 10^11 POEMMA and GRAND10k will improve the neutrino sensitivity to particle dark matter by factors of 2 to 10 over existing limits, whereas GRAND200k will improve this sensitivity by two orders of magnitude. In the range 10^11 ≤ mχ/GeV ≤ 10^15 , POEMMA’s fluorescence observation mode will achieve an unprecedented sensitivity to dark matter properties. Finally, we highlight the importance of the uncertainties related to the dark matter distribution in the Galactic halo, using the latest fit and estimates of the Galactic parameters.

  1. Neutrino constraints on long-lived heavy dark sector particle decays in the Earth

  2. On the most constraining cosmological neutrino mass bounds

  3. Search for High-Energy Neutrinos from Ultra-Luminous Infrared Galaxies with IceCube

  4. Direction Reconstruction using a CNN for GeV-Scale Neutrinos in IceCube

  5. A study of super-luminous stars with the Fermi Large Area Telescope

  6. Reconstructing the neutrino energy for in-ice radio detectors: A study for the Radio Neutrino Observatory Greenland (RNO-G)

  7. Latest results of ultra-high-energy cosmic ray measurements with prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST)

11:45 am, Friday, Jun 25th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 55688

  1. The EMU view of the Large Magellanic Cloud: Troubles for sub-TeV WIMPs

  2. Probing neutrino emission at GeV energies from compact binary mergers with the IceCube Neutrino Observatory

  3. Profiles of energetic muons in the atmosphere

  4. Stellar Shocks From Dark Matter

  5. Absorption from Primordial Black Holes as source of baryon asymmetry

  6. Dy-159 electron-capture: a strong new candidate for neutrino mass determination

  7. Probing Compensated Isocurvature with the 21-cm Signal during Cosmic Dawn

  8. Recent LIGO-Virgo discoveries

Juneteenth holiday: No APL on Jun 18th

  1. Neutrino events within muon bundles at neutrino telescopes

  2. All-flavor constraints on nonstandard neutrino interactions and generalized matter potential with three years of IceCube DeepCore data

  3. Probing neutrino emission at GeV energies from compact binary mergers with the IceCube Neutrino Observatory

  4. Simple estimate of BBN sensitivity to light freeze-in dark matter

  5. Extended search for supernova-like neutrinos in NOvA coincident with LIGO/Virgo detections

  6. Probing neutrino emission at GeV energies from compact binary mergers with the IceCube Neutrino Observatory

  7. Search for gravitational waves from the coalescence of sub-solar mass binaries in the first half of Advanced LIGO and Virgo’s third observing run

  8. A Decade of Discoveries by the Daya Bay Reactor Neutrino Experiment

  9. Remnant black hole kicks and implications for hierarchical mergers

11:45 am, Friday, Jun 11th via Zoom

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with the passcode: 130425

  1. Sliding Naturalness

  2. Inelastic Dark Matter at the Fermilab Short Baseline Neutrino Program

  3. Impact of Improved Energy Resolution on DUNEsensitivity to Neutrino Non-Standard Interactions

  4. Signatures of primordial black hole dark matterat DUNE and THEIA

  5. The effects of dark matter on compact binary systems

  6. Crust-core transition of a neutron star: effect of the temperatureunder strong magnetic fields

  7. Probing Dark Matter and Fundamental Physics with the Cherenkov Telescope Array

  8. SQUEEZING THE AXION

11:45 am, Friday, Jun 4th via Zoom

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with the passcode: 55688

Guest: Ivan Martinez-Soler (Northwestern U)

Title: SN1987A still shining: A Quest for Pseudo-Dirac Neutrinos

Abstract:

Ever since the discovery of neutrinos, one question has daunted us, are neutrinos their own antiparticles? One remarkable possibility is that neutrinos have a pseudo-Dirac nature, truly Majorana neutrinos which behave, for all practical purposes, as Dirac fermions, only distinguishable by tiny mass-squared differences. Such mass differences would induce oscillations that could only be conspicuous over astrophysical baselines. We analyze the neutrino data from SN1987A in the light of these active sterile oscillations and find a mild preference (∆χ^2 ≈ 3) for a non-zero quadratic mass difference δm^2 = 6.31 × 10^(−20) eV^2 . Notably, the same data is able to exclude δm^2 ~ [2.55, 3.01] × 10^(−20) eV^2 with ∆χ^2 > 9, the tiniest mass differences constrained so far. We further consider the future sensitivity of next-generation experiments like the Deep Underground Neutrino Experiment (DUNE) and Hyper-Kamiokande (HK) and demonstrate that, for a future galactic SN occurring at 10 kpc, mass-squared differences as small as ~ 10^(−20) eV^2 could be explored.

  1. Probing neutrino emission at GeV energies from compact binary mergers with the IceCube Neutrino Observatory

  2. On the relation between the astrophysical neutrino fluxes and the cosmic ray fluxes

  3. Search for dark matter annihilation signals from unidentified Fermi-LAT objects with H.E.S.S.

  4. Looking for the parents of LIGO’s black holes

  5. Neutrino propagation in winds around the central engine of sGRB

  6. Neutrino events within muon bundles at neutrino telescopes

  7. Binary black hole mergers: formation and populations

  8. Search for intermediate mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo

  9. Detection of LIGO-Virgo binary black holes in the pair-instability mass gap

11:45 am, Friday, May 28th via Zoom

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with the passcode: 379133

  1. Multi-component multiscatter capture of Dark Matter

  2. Particle detection and tracking with DNA

  3. Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo

  4. Harvesting quantum coherence from axion dark matter

  5. A Search for the 3.5 keV Line from the Milky Way's Dark Matter Halo with HaloSat

  6. Gamma rays and neutrinos from RX J1713.7-3946 in a lepto-hadronic scenario

  7. On the relation between the astrophysical neutrino fluxes and the cosmic ray fluxes

  8. Do gamma-ray burst measurements provide a useful test of cosmological models?

11:45 am, Friday, May 21st via Zoom

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with the passcode: 562867

Guest: Daniele Teresi (CERN)

  1. Primordial Black Holes from First-Order Cosmological Phase Transitions

  2. First direct neutrino-mass measurement with sub-eV sensitivity

  3. Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources

  4. Heavy Neutrino searches through Double-Bang Events atSuper-Kamiokande, DUNE, and Hyper-Kamiokande

  5. Constraining active-sterile neutrino transitionmagnetic moments at DUNE near and far detectors

  6. Black hole induced false vacuum decayfrom first principles

  7. SU(5)L×U(1)Y electroweak unification

11:45 am, Friday, May 14th via Zoom

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with the passcode: 55688

  1. European Spallation Source: a future for Coherent Neutrino Nucleus Scattering

  2. On the origin of observed cosmic ray spectrum below 100 TeV

  3. New Thermal Relic Targets for Inelastic Vector-Portal Dark Matter

  4. Neutron stars and the secret lives of quarks

  5. The neutrino gravitational memory from a core collapse supernova: phenomenology and physics potential

  6. Interstellar Gas Heating by Primordial Black Holes

  7. Searching for new physics through neutrino non-standard interactions

  8. ALMA and NOEMA constraints on synchrotron nebular emission from embryonic superluminous supernova remnants and radio–gamma-ray connection

  9. Probing ultra-light dark photon from inverse Compton-like scattering

  10. Can late dark energy restore the Cosmic concordance?

  11. Constraining Mach’s principle with high precision astrometry

11:45 am, Friday, May 7th via Zoom

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with the passcode: 841892

Guest: Bei Zhou (Johns Hopkins University)

  1. Search for High-Energy Neutrino Emission from Radio-Bright AGN

  2. Improved Treatment of Dark Matter Capture in White Dwarfs

  3. Searching For Gravitational Waves From Cosmological Phase Transitions With The NANOGrav 12.5-year dataset

  4. Emission lines from X-ray illuminated accretion disc in black hole binaries

  5. High-energy cosmic neutrinos as a probe of the vector mediator scenario in light of the muon g−2 anomaly and Hubble tension

  6. AGILE Observations of Fast Radio Bursts

  7. The ANITA Anomalous Events and Axion Quark Nuggets

  8. First implications of Tibet ASγ data for heavy dark matter

  9. Impedance Matching to Axion Dark Matter

11:45 am, Friday, Apr 30 via Zoom

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with the passcode: 14212

Guest: Carlos Blanco (Stockholm U., OKC)

Title: Gamma-Rays from Star Forming Activity Appear to Outshine Misaligned Active Galactic Nuclei

  1. Quarkonium interactions with (hot) hadronic matter

  2. Resurrecting Low-Mass Axion Dark Matter Via a Dynamical QCD Scale

  3. Radial oscillations in neutron stars from QCD

  4. Beyond freeze-in: Dark Matter via inverse phase transition and gravitational wave signal

  5. Peccei-Quinn-like symmetries for nonabelian axions

  6. Calculated event rates for Axion Detection via Atomic and Nuclear Processes

  7. Experimental signatures of a new dark matter WIMP

  8. Dark matter implications of the KATRIN neutrino mass experiment

  9. Gravitational SIMPs

11:45 am, Friday, Apr 23rd via Zoom

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with the passcode: 634079

  1. The Radar Echo Telescope for Cosmic Rays: Pathfinder Experiment for a Next-Generation Neutrino Observatory

  2. Limits on Sub-GeV Dark Matter from the PROSPECT Reactor Antineutrino Experiment

  3. Constraining Primordial Black Holes Based on The Dynamics of Neptune

  4. Gamma Ray Burst studies with THESEUS

  5. Constraining Mixed Dark-Matter Scenarios of WIMPs and Primordial Black Holes from CMB and 21-cm observations

  6. Constraints on axionic fuzzy dark matter from light bending and Shapiro time delay

  7. Multi-messenger Implications of Sub-PeV Diffuse Galactic Gamma-Ray Emission

  8. Search for neutrinos in coincidence with gravitational wave events from the LIGO-Virgo O3a Observing Run with the Super-Kamiokande detector

  9. Radio Line Properties of Axion Dark Matter Conversion in Neutron Stars

  10. Geminga SNR: Possible candidate of local cosmic-ray factory

  11. Constraining Ultralight Axions with Galaxy Surveys

11:45 am, Friday, Apr 16th not via Zoom

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with the passcode: 55688

Guest: Andrea Caputo (Weizmann Inst.)

Title: Searching for Sterile Neutrino with X-ray Intensity Mapping

Abstract:

The cosmological X-ray emission associated to the possible radiative decay of sterile neutrinos is composed by a collection of lines at different energies. For a given mass, each line corresponds to a given redshift. In this work, we cross correlate such line emission with catalogs of galaxies tracing the dark matter distribution at different redshifts. We derive observational prospects by correlating the X-ray sky that will be probed by the eROSITA and Athena missions with current and near future photometric and spectroscopic galaxy surveys. A relevant and unexplored fraction of the parameter space of sterile neutrinos can be probed by this technique.

  1. Searching for Sterile Neutrino with X-ray Intensity Mapping

  2. Axion-like Particles from Hypernovae

  3. Supernova fallback as origin of neutron star spins and spin-kick alignment

  4. First Detection of sub-PeV Diffuse Gamma Rays from the Galactic Disk: Evidence for Ubiquitous Galactic Cosmic Rays beyond PeV Energies

  5. Stationary solutions for fast flavor oscillations of a homogeneous dense neutrino gas

  6. Origin of Galactic sub-PeV diffuse gamma-ray emission: Constraints from high-energy neutrino observations

  7. Constraining Black Hole Spin Based on the Absence of Lense-Thirring Precession of Megamaser Clumps

11:45 am, Friday, Apr 9th not via Zoom

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with the passcode: 55688

Guest: Anders E. Thomsen (Bern U.)

Title: A Model of Muon Anomalies

Abstract:

The Standard Model (SM) is augmented with a U(1)B3Lμgauge symmetry spontaneously brokenabove the TeV scale when an SM-singlet scalar condenses. Scalar leptoquarksS1(3)= (3,1(3),1/3)charged under U(1)B3Lμmediate the intriguing effects observed in muon (g−2),RK(∗)andb→sμ+μ, while generically evading all other phenomenological constraints. The fermionic sectoris minimally extended with three right-handed neutrinos, and a successful type-I seesaw mechanismis realized. Charged lepton flavor violation and proton decay—common predictions of leptoquarks—are postponed to the dimension-6 effective Lagrangian. Unavoidable radiative corrections in theHiggs mass and muon Yukawa favor leptoquark masses interesting for collider searches. The param-eters of the model are radiatively stable and can be evolved by the renormalization group to thePlanck scale without inconsistencies. Alternative models based on a U(1)Lμ−Lτgauge symmetryare proposed for comparison.

  1. A Model of Muon Anomalies

  2. Evidence of TeV Halos Around Millisecond Pulsars

  3. First Analysis of Jupiter in Gamma Rays and a New Search for Dark Matter

  4. Leading hadronic contribution to the muon magnetic moment from lattice QCD

  5. Muon g-2 in Lepton Portal Dark Matter

  6. Implications of muon g-2 anomaly, Galactic Center GeV excess and AMS-02 anti-proton excess for NMSSM

  7. Find the Gap: Black Hole Population Analysis with an Astrophysically Motivated Mass Function

  8. Gravitational Wave Physics and Astronomy in the nascent era

11:45 am, Friday, April 1.5th not via Zoom

  1. Using Artificial Intelligence to Shed Light on the Star of Biscuits:The Jaffa Cake

  2. The Swampland

  3. Pandemic Dark Matter

11:45 am, Friday, Mar 26th via Zoom

Guest: Timon Emken (Chalmers Uni)

Use this link to access the meeting: ZOOM

with the passcode: 295577

  1. Solar reflection of light dark matter with heavy mediators

  2. Search for High-Energy Neutrino Emission from Radio-Bright AGN

  3. Coherence of oscillations in matter and supernovaneutrinos

  4. The Gravitino Swampland Conjecture

  5. Looking for a vectorlike B quark at LHC using jet substructure

  6. Configurational entropy of heavy-quark QCD exotica: engendering the nextgeneration

  7. Minimal Dark Matter boundstates at future colliders

  8. Axion Cloud Decay due to the Axion-photon Conversionwith Background Magnetic Fields

  9. New Physics in RareBDecays after Moriond 2021

11:45 am, Friday, Mar 19th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 250931

  1. Accidentally Asymmetric Dark Matter

  2. Detection of GeV γ-Ray Emission from supernova remnant SNR G15.9-0.2 with Fermi-LAT

  3. The neutrino emission from thermal processes in very massive stars in the local universe

  4. HAWC observations of the acceleration of very-high-energy cosmic rays in the Cygnus Cocoon

  5. Identification of neutrino bursts associated to supernovae with Real-time Test Statistic (RTS2) method

  6. X-ray emitting structures in the Vela SNR: ejecta anisotropies and progenitor stellar wind residuals

  7. X-ray and GeV afterglows and sub-TeV emission of GRB 180720B

  8. The morphology of the X-ray afterglows and of the jetted GeV emission in long GRBs

  9. Dark matter searches using accelerometer-based networks

  10. Constraining Ultra-light Axions with Galaxy Cluster Number Counts

  11. The 511 keV Excess and Primordial Black Holes in our Solar System

11:45 am, Friday, Mar 12th via Zoom

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with the passcode: 12345

Guest: Yi-Kuan Chiang

  1. Entropy production due to electroweak phase transition in the framework of two Higgs doublet model

  2. Solar reflection of light dark matter with heavy mediators

  3. Searching for Magnetic Monopoles with theEarth’s Magnetic Field

  4. Probing CP Violation in PhotonSelf-Interactions with Cavities

  5. Detection of a particle shower at the Glashow resonance with IceCube

11:45 am, Friday, Mar 5th via Zoom

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with the passcode: 31415

Guest: Xavier Rodrigues (DESY)

Title: AGN jets as the origin of UHECRs and perspectives for the detection of EeV astrophysical neutrinos

Abstract:

We demonstrate that a population of Active Galactic Nuclei (AGN) can describe the observed spectrum of ultra-high-energy cosmic rays (UHECRs) at and above the ankle, and that the dominant contribution comes from low-luminosity BL Lacs. Such an AGN-only scenario is in tension with UHECR composition observations above 10 EeV. However, a sub-dominant contribution from high-luminosity AGN reduces this tension and leads simultaneously to a substantial neutrino flux that peaks at EeV energies. The same emission also extends down to PeV energies, and is therefore constrained by current IceCube limits. We also show that the flux of neutrinos emitted from within the sources should outshine the cosmogenic neutrinos produced during the propagation of UHECRs. This result has profound implications for ultra-high-energy (∼EeV) neutrino experiments, since additional search strategies can be used for source neutrinos compared to cosmogenic neutrinos, such as stacking searches, flare analyses, and multi-messenger follow-ups.

  1. A composite solution to the EDGES anomaly

  2. The first evidence for three-dimensional spin-velocity alignment in pulsars

  3. Prospects for kilonova signals in the gravitational-wave era

  4. High Energy Neutrinos from Choked Gamma-Ray Bursts in AGN Accretion Disks

  5. High-Energy Neutrinos from NGC 1068

  6. Neutrinos from tidal disruption events

  7. Reconstruction of the neutrino mass as a function of redshift

  8. Emission Mechanisms of Fast Radio Bursts

  9. In the Realm of the Hubble tension −a Review of Solutions

11:45 am, Friday, Feb 26th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 544989

  1. Dissipative Dark Matter on FIRE: I. Structural and kinematic properties of dwarf galaxies

  2. High-Energy Neutrinos from NGC 1068

  3. Neutrinos from tidal disruption events

  4. Supernova neutrino signals based on long-term axisymmetric simulations

  5. Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils

  6. Exploring dark sector parameters in light of neutron star temperatures

  7. Exploring dark sector parameters in light of neutron star temperatures

  8. Germanium response to sub-keV nuclear recoils: a multipronged experimental characterization

  9. Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of 208Pb with Minimal Modeling Assumptions

  10. The phenomenology of nuclear scattering for a WIMP of arbitrary spin

  11. Directional Detectability of Dark Matter With Single Phonon Excitations: Target Comparison

  12. Axion search with quantum nondemolition detection of magnons

11:45 am, Friday, Feb 19th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 111111

  1. Challenging the Stability of Light Millicharged Dark Matter

  2. Doubly hidden 0++molecules and tetraquarks states from QCD at NLO

  3. Leptophilic fermion WIMP∼Role of future lepton colliders∼

  4. Terrestrial Probes of Electromagnetically Interacting Dark Radiation

  5. Constraining Light Dark Photons from GW190517 and GW190426152155

  6. MODEL-INDEPENDENT DETECTION OF NEW PHYSICS SIGNALS USINGINTERPRETABLE SEMI-SUPERVISED CLASSIFIER TESTS

11:45 am, Friday, Feb 12th via Zoom

Guest: Payel Mukhopadhyay (Stanford U)

Use this link to access the meeting: ZOOM

with the passcode: 111111

  1. Celestial-Body Focused Dark Matter Annihilation Throughout the Galaxy

  2. Measuring solar neutrinos over Gigayear timescales with Paleo Detectors

  3. Nucleosynthesis signatures of neutrino-driven winds from proto-neutron stars: a perspective from chemical evolution models

  4. Supernova Constraint on Self-Interacting Dark Sector Particles

  5. Neutrino signal dependence on gamma-ray burst emission mechanism

  6. Urca Cooling in Neutron Star Crusts and Oceans: Effects of Nuclear Excitations

  7. Neutrinos in N-body simulations

  8. The trouble beyond H0 and the new cosmic triangles

  9. DETECTING NEUTRINO MASS BY COMBINING MATTER CLUSTERING, HALOS, AND VOIDS

  10. First demonstration of early warning gravitational wave alerts

  11. What can be learned from a proto-neutron star’s mass and radius?

11:45 am, Friday, Feb 5th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 111111

  1. Dynamical Pool-Size Optimization for the SARS-CoV-2 PCR Test

  2. A search for radio afterglows from gamma-ray bursts with the Australian Square Kilometre Array Pathfinder

  3. Measuring solar neutrinos over Gigayear timescales with Paleo Detectors

  4. Connecting the Light Curves of Type IIP Supernovae to the Properties of their Progenitors

  5. Dark matter from an even lighter QCD axion: trapped misalignment

  6. Exploring the Origin of Supermassive Black Holes with Coherent Neutrino Scattering

  7. Searching for eV-mass Axion-like Particles with Cross Correlations between Line Intensity and Weak Lensing Maps

  8. Constraining axion-like particles using the white dwarf initial-final mass relation

  9. The Spectrum of Dark Radiation as a Probe of Reheating

  10. A discovery of a low-energy excess in cosmic-ray iron: an evidence of the past supernova activity in the Local Bubble

  11. Neutron Stars Harboring a Primordial Black Hole: Maximum Survival Time

  12. Thermonuclear X-ray Bursts with late secondary peaks observed from 4U 1608-52

11:45 am, Friday, Jan 29nd via Zoom

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with the passcode: 00000

  1. Resonant Scattering between Dark Matter and Baryons: Revised Direct Detection and CMB Limits

  2. Earth-bound Milli-charge Relics

  3. Long Range Interactions in Cosmology: Implications for Neutrinos

  4. Dynamical Pool-Size Optimization for the SARS-CoV-2 PCR Test

  5. Observing Invisible Axions withGravitational Waves

  6. Is a Miracle-less WIMP Ruled out?

    1. Dark matter–electron scattering in dielectrics

11:45 am, Friday, Jan 22nd via Zoom

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with the passcode: 00000

Guest: Francesco Capozzi (Virginia Tech), Linda Xu (Harvard)

  1. Fast neutrino flavor conversions in one-dimensional core-collapse supernova models with and without muon creation

  2. A Closer Look at CP-Violating Higgs Portal Dark Matter as a Candidate for the GCE

  3. Long Range Interactions in Cosmology: Implications for Neutrinos

  4. The Future of High-Energy Astrophysical Neutrino Flavor Measurements

  5. Neutrino mass ordering obfuscated by the NSI

  6. Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars

  7. Impact of Dark Photon Emission on Massive Star Evolution and Pre-Supernova Neutrino Signal

  8. When are LIGO/Virgo’s Big Black-Hole Mergers?

  9. Constraining neutron star radii in black hole-neutron star mergers from their electromagnetic counterparts

  10. Discovery of an 8 MeV line in the SN 1987A neutrino spectrum

  11. A Machine Learning approach for classification of accretion states of Black hole binaries

  12. High-Energy Neutrino Production in Clusters of Galaxies

  13. The final core collapse of pulsational pair instability supernovae

11:45 am, Friday, Jan 15th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 053289

Guest: Edoardo Vitagliano (UCLA)

  1. Supernova Model Discrimination with Hyper-Kamiokande

  2. Investigating the Effect of PBH, Dark Matter -- Baryon and Dark Matter -- Dark Energy Interaction on EDGES in 21cm Signal

  3. Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin

  4. Common envelope jets supernovae with a black hole companion as possible high energy neutrino sources

  5. Stringent constraint on the radio signal from dark matter annihilation in dwarf spheroidal galaxies using the TGSS

  6. Analysis methods for the first KATRIN neutrino-mass measurement

  7. Constraining the Fast Radio Burst (FRB) properties using the joint distributions of dispersion measure and fluence of the events detected at Parkes, ASKAP, CHIME and UTMOST

  8. Testing dark matter interactions with CMB spectral distortions

  9. Estimating the Neutrino Flux from Choked Gamma-Ray Bursts

  10. Search for Tens of MeV Neutrinos associated with Gamma-Ray Bursts in Super-Kamiokande

  11. Probing Kilonova Ejecta Properties Using a Catalog of Short Gamma-Ray Burst Observations

  12. GeV Scale Inelastic Dark Matter with Dark Photon Mediator via Direct Detection and Cosmological/Laboratory Constraints

  13. Anisotropic Dark Matter Stars

  14. Resonant Scattering between Dark Matter and Baryons: Revised Direct Detection and CMB Limits

2020

11:45 am, Friday, Jan 8th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 983520

Guest: Aneta Wojnar (Tartu University)

  1. Cooling process of brown dwarfs in Palatini f(R) gravity

  2. Heavy dark matter and Gravitational waves

  3. Light Dark Matter through Resonance Scanning

  4. Color-octet scalars in Dirac gaugino models with broken R symmetry

  5. THE SUN: LIGHT DARK MATTER AND STERILE NEUTRINOS

  6. MAGIC observations of the nearby short gamma-ray burst GRB 160821B

  7. Bose-Einstein Condensation of pions in Proton-Proton collisions at the Large Hadron Collider

  8. A closer look at white hole remnants

  9. Telescope Array Bursts, Radio Pulses and Axion Quark Nuggets

11:45 am, Friday, Dec 18th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 352924

Guest: William Luszczak (University of Wisconsin)

  1. Fast neutrino flavor conversions in one-dimensional core-collapse supernova models with and without muon creation

  2. Binary interactions enhance the Diffuse Supernova Neutrino Background

  3. Nucleon Structure and Strong Interactions in Dark Matter Capture in Neutron Stars

  4. Gravitational wave constraints on the primordial black hole dominated early universe

  5. IceCube constraints on Violation of Equivalence Principle

  6. MAGIC observations of the nearby short gamma-ray burst GRB 160821B

  7. The QCD Axion and Gravitational Waves in light of NANOGrav results

  8. The spectra and composition of Ultra High Energy Cosmic Rays and the measurement of the proton-air cross section

  9. A Stringent Upper Limit on Dark Matter Self-Interaction Cross Section from Cluster Strong Lensing

  10. On the characteristics of fast neutrino flavor instabilities in three-dimensional core-collapse supernova models

  11. Interpretation of XENON1T excess with MeV boosted dark matter

  12. Detection of large-scale X-ray bubbles in the Milky Way halo

  13. The POEMMA (Probe of Extreme Multi-Messenger Astrophysics) Observatory

11:45 am, Friday, Dec 11th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

Guest: Yu-Dai Tsai (Fermilab)

  1. Resonant Self-Interacting Dark Matter from Dark QCD

  2. First Observations of Solar Disk Gamma Rays over a Full Solar Cycle

  3. Earth-bound Milli-charge Relics

  4. Probing secret interactions of eV-scale sterile neutrinoswith the diffuse supernova neutrino background

  5. Follow-up of astrophysical transients in real time with the IceCube Neutrino Observatory

  6. Cooling of young neutron stars and dark gauge bosons

  7. Cosmic-ray antiprotons in the AMS-02 era:A sensitive probe of dark matter

  8. Two populations of LIGO-Virgoblack holes

  9. Detecting the brightest HAWC sources with IceCubein the upcoming years

  10. The role of core-collapse physics in the observability of black-hole neutron-star mergers asmulti-messenger sources

  11. GW190426 152155: a merger of neutron star-black hole or low mass binary black holes?

11:45 am, Friday, Dec 4th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

  1. Ultralight Fermionic Dark Matter

  2. Universal profiles for radio searches of dark matter in dwarf galaxies

  3. Gauge couplings evolution from the Standard Model, through Pati-Salam theory, into E8

  4. Searching for the dark sector in two-body anti-muon decaywith the polarization of monochromatic positrons

  5. A Proposed Network to Detect Axion Quark Nugget Dark Matter

  6. Electroweak Restoration at the LHC and Beyond: The Vh Channel

  7. Dark sector production and baryogenesisfrom not quite black holes

No Lunch on Friday, Nov 27th

Enjoy the Thanksgiving holiday : )

11:45 am, Friday, Nov 20th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

Guest: Philip Lu (UCLA)

News Release: NSF begins planning for decommissioning of Arecibo Observatory’s 305-meter telescope due to safety concerns

  1. Constraining Primordial Black Holes with Dwarf Galaxy Heating

  2. Intimate Relationship Between Sterile Neutrino Dark Matter and ΔNeff

  3. Core-Collapse Supernove Burst Neutrinos in DUNE

  4. What determines the structure of short gamma-ray burst jets?

  5. Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos

  6. A Demonstration of Improved Constraints on Primordial Gravitational Waves with Delensing

  7. The cosmology of sub-MeV dark matter freeze-in

  8. Constraints on Lightly Ionizing Particles from CDMSlite

  9. Black hole-neutron star coalescence: effects of the neutron star spin on jet launching and dynamical ejecta mass

  10. Constraints on the properties of warm dark matter using the satellite galaxies of the Milky Way

  11. Implications of recoil kicks for black hole mergers from LIGO/Virgo catalogs

  12. High-energy neutrino astronomy and the Baikal-GVD neutrino telescope

11:45 am, Friday, Nov 13th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

Guest: Pierluca Carenza (Bari U.)

  1. Enhanced Supernova Axion Emission and its Implications

  2. Modeling in-ice radio propagation with parabolic equation methods

  3. Intimate Relationship Between Sterile Neutrino Dark Matter and ∆N_eff

  4. On-shell effective theory for higher-spin dark matter

  5. Shining Primordial Black Holes

  6. ETHOS - An Effective Theory of Structure Formation:Impact of Dark Acoustic Oscillations on Cosmic Dawn

  7. Light mass window of lepton portal dark matter

  8. Gravitational Waves as a Big Bang Thermometer

  9. Shining light through the Higgs portal with γγ-colliders

No Lunch on Friday, Nov 6th

Papers of interest:

  1. New Pathways to the Relic Abundance of Vector-Portal Dark Matter

  2. Astrophysical constraints on non-standard coherent neutrino-nucleus scattering

  3. Non-thermal neutrinos created by shock acceleration in successful and failed core-collapse supernova

  4. Neutrino 2020: Theory Outlook

  5. Black Holes and WIMPs: All or Nothing or Something Else

  6. A Program for Multi-Messenger Standard Siren Cosmology in the Era of LIGO A+, Rubin Observatory, and Beyond

  7. Exciting modes due to the aberration of gravitational waves: Measurability for extreme-mass-ratio inspirals

  8. Excitation of gravitational wave modes by a center-of-mass velocity of the source

  9. The Milky Way’s bar structural properties from gravitational waves

  10. Gravitational-Wave Signatures from Compact Object Binaries in the Galactic Center

  11. Pulsational pair-instability and the mass gap of Population III Black Holes: Effects of overshooting

  12. Axion Searches with Two Superconducting Radio-frequency Cavities

  13. How do I introduce Schrodinger equation during the quantum mechanics course?

11:45 am, Friday, Oct 30th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 515588

Guest: Chengchao Yuan (PSU)

  1. High-energy neutrino emission subsequent to gravitational wave radiation from supermassive black hole mergers

  2. A search for ultrahigh-energy neutrinos associated with astrophysical sources using the third flight of ANITA

  3. Hunting for Dark Matter Subhalos in Strong Gravitational Lensing with Neural Networks

  4. Anomaly Detection for Multivariate Time Series of Exotic Supernovae

  5. On Dark Matter Explanations of the Gamma-Ray Excesses from the Galactic Center and M31

  6. Non-thermal neutrinos created by shock acceleration in successful and failed core-collapse supernova

  7. Probing cosmic-ray accelerated light dark matter with IceCube

  8. Joint constraints on thermal relic dark matter from a selection of astrophysical probes

  9. GW190521 may be an intermediate mass ratio inspiral

  10. Reconciling EHT and Gas Dynamics Measurements in M87: Is the Jet Misaligned at Parsec Scales?

  11. Seeding Supermassive Black Holes with Self-Interacting Dark Matter

  12. Annihilating Dark Matter Search with 12 Years of Fermi LAT Data in Nearby Galaxy Clusters

  13. A search for ultra high energy neutrinos from TXS 0506+056 using the Pierre Auger Observatory

  14. Measuring the mass and concentration of dark matter halos from the velocity dispersion profile of their stars

  15. Degeneracies between baryons and dark matter: the challenge of constraining the nature of dark matter with JWST

  16. No phosphine in the atmosphere of Venus

  17. Re-analysis of the 267-GHz ALMA observations of Venus: No statistically significant detection of phosphine

11:45 am, Friday, Oct 23th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

Guest: Jaryd Ulbricht from UCSC

  1. Asymptotic analysis of the Boltzmann equation for dark matter relic abundance

  2. A search for ultrahigh-energy neutrinos associated with astrophysicalsources using the third flight of ANITA

  3. Searches for new sources of CP violation using molecules as quantum sensors

  4. Split Left-Right Symmetry and Scotogenic Quark and Lepton Masses

  5. Exploring the Universe with Dark Light Scalars

  6. Deconstructing higher order clockwork gravity

  7. Sensitivity of the SHiP experiment to lightdark matter

  8. Lowest Dimensional Portals to SU(N) Exotics

11:45 am, Friday, Oct 16th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 743046

  1. Detecting Composite Dark Matter with Long Range and Contact Interactions in Gas Clouds

  2. HAWC and Fermi-LAT Detection of Extended Emission from the Unidentified Source 2HWC J2006+341

  3. Hybrid Stars with Hyperons and Strange Quark Matter

  4. Cosmic ray flux and lockdown due to COVID19 in Kolkata -- any correlation?

  5. Production of axion-like particles from photon conversions in large-scale solar magnetic fields

  6. The observation of the Crab Nebula with LHAASO-KM2A for the performance study

  7. Constraints on MeV dark matter and primordial black holes: Inverse Compton signals at the SKA

  8. Stringent Search for Precursor Emission in Short GRBs from Fermi/GBM data and Physical Implications

  9. Direct Detection of Hawking Radiation from Asteroid-Mass Primordial Black Holes

  10. Large N-ightmare Dark Matter

  11. Cosmological constraints on multi-interacting dark matter

  12. Constraining three-nucleon forces with multimessenger data

  13. Superheavy Dark Matter from String Theory

  14. New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies

11:45 am, Friday, Oct 9th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 489879

  1. Universal gravitational-wave signatures from heavy new physics in the electroweak sector

  2. An excess of small-scale gravitational lenses observed in galaxy clusters

  3. Filling the Black Hole Mass Gap: Avoiding Pair Instability in Massive Stars through Addition of Non-Nuclear Energy

  4. Constraints on the Epoch of Dark Matter Formation from Milky Way Satellites

  5. Relic Neutrino Degeneracies and Their Impact on Cosmological Parameters

  6. Inference of neutrino flavor evolution through data assimilation and neural differential equations

  7. Probing dark photons in the early universe with big bang nucleosynthesis

  8. Direct Detection of Atomic Dark Matter in White Dwarfs

  9. Gravitational Waves from Neutrino Asymmetries in Core-Collapse Supernovae

  10. Impact of neutrino pair-production rates in Core-Collapse Supernovae

  11. The TeV Cosmic Ray Bump: a Message from Epsilon Indi Star?

  12. Cosmic ray positrons from compactbinary millisecond pulsars

  13. The Stellar Merger Scenario for Black Holes in the Pair-instability Gap

  14. Inferring physical properties of stellar collapse by third-generation gravitational-wave detectors

  15. Big Bang Nucleosynthesis constraints on Barrow entropy

11:45 am, Friday, Oct 2nd via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

  1. Exoplanets as New Sub-GeV Dark Matter Detectors

  2. Neutrino oscillation in dark matter with Lμ−Lτ

  3. Final state Sommerfeld effect on dark matter relic abundance

  4. Dark Matter Interferometry

  5. Sommerfeld Enhancements for Asymmetric Dark Matter

  6. Effective Field Theory of Dark Matter Direct DetectionWith Collective Excitations

  7. QFT treatment of a bound state in a thermal gas

11:45 am, Friday, Sept 25th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 295833

This week, Professor Basudeb Dasgupta will give a talk about his recent paper, "Fast Flavor Depolarization of Supernova Neutrinos"

  1. Fast Flavor Depolarization of Supernova Neutrinos

  2. Direct Detection Limits on Heavy Dark Matter

  3. A deep Chandra survey for faint X-ray sources in the Galactic globular cluster M30, and searches for optical and radio counterparts

  4. Directional association of TeV to PeV astrophysical neutrinos with active galaxies hosting compact radio jets

  5. Formation of the cosmic-ray halo: Galactic spectrum of primary cosmic rays

  6. Evidence of Cosmic-Ray Excess from Local Giant Molecular Clouds

  7. A survey of active galaxies at TeV photon energies with the HAWC gamma-ray observatory

  8. Neutrino signatures of near-critical supernova outflows

  9. Association of IceCube neutrinos with radio sources observed at Owens Valley and Metsähovi Radio Observatories

  10. Observing the thermalization of dark matter in neutron stars

  11. Probing photophobic (rel)axion dark matter

  12. Estimation of an Upper Limit on the Density of Relic Neutrinos in the Sun via the Solar 8B Neutrino Flux

  13. Searching for Gravitational Waves with Strongly Lensed Repeating Fast Radio Bursts

11:45 am, Friday, Sept 18th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 797537

  1. Simulating gamma-ray production from cosmic rays interacting with the solar atmosphere in the presence of coronal magnetic fields

  2. Stellar cooling, inelastic dark matter, and XENON

  3. High-energy neutrino emission subsequent to gravitational wave radiation from supermassive black hole mergers

  4. Fundamental physics with the diffuse supernova background neutrinos

  5. Don't fall into the gap: GW190521 as a straddling binary

  6. GW190521 as a Highly Eccentric Black Hole Merger

  7. A gravitational-wave limit on the Chandrasekhar mass of dark matter

  8. Limiting Superluminal Neutrino Velocity and Lorentz Invariance Violation by Neutrino Emission from the Blazar TXS 0506+056

  9. On the rate of core collapse supernovae in the Milky Way

  10. Using Gravitational Wave Parallax to Measure the Hubble Parameter with Pulsar Timing Arrays

  11. Possible Signature of First-Order Phase Transition in the Multi-messenger Data of Neutron Stars

    1. Phosphine gas in the cloud decks of Venus (Press briefing)

11:45 am, Friday, Sept 11th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 12345

  1. Using High-Energy Neutrinos As Cosmic Magnetometers

  2. Asymptotic analysis of the Boltzmann equation for dark matter relic abundance

  3. Baryogenesis through baryon capture by black holes

  4. Stellar cooling, inelastic dark matter, and XENON

  5. Dark Fluxes from Accreting Black Holes and Direct Detections

  6. Effects of Dark Matter in Red Giants

  7. A Tale of Planet Formation: From Dust to Planets

11:45 am, Friday, Sept 4th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 731870

  1. Properties and astrophysical implications of the 150 Msun binary black hole merger GW190521

  2. Low Mass Black Holes from Dark Core Collapse

  3. The GW190521 Mass Gap Event and the Primordial Black Hole Scenario

  4. GW190521: A Binary Black Hole Merger with a Total Mass of 150 M⊙

  5. Neutrino Counterparts of Fast Radio Bursts

  6. On the Detection Potential of Blazar Flares for Current Neutrino Telescopes

  7. Constraining sub-eV Dark Matter from Direct Detection Experiment

  8. All known Type Ia supernovae models fail to reproduce the observed t0−MNi56 correlation

  9. Testing the ALP-photon coupling with polarization measurements of Sagittarius A*

  10. Radio impulsive events in quiet solar corona and Axion Quark Nugget Dark Matter

  11. Dark Matter Density Profiles in Dwarf Galaxies: Linking Jeans Modeling Systematics and Observation

  12. Origin of the hardening in AMS-02 nuclei spectra at a few hundred GV

  13. SM antideuteron background to indirect dark matter signals in galactic cosmic rays

11:45 am, Friday, August 28th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 43210

  1. A search for solar axions and anomalous neutrino magnetic moment with thecomplete PandaX-II data

  2. Constraints on General Light Mediators from PandaX-II Electron Recoil Data

  3. New Experimental Constraints in a New Landscape for Composite Dark Matter

  4. Diffractive production of Λ hyperonsin the high-energy limit of strong interactions

  5. Earliest Resolution to the Neutrino Mass Ordering? (? in the title ;-)...)

  6. Einstein-Cartan Portal to Dark Matter

  7. Hints for decaying dark matter from S8 measurements

  8. Eliminating the LIGO bounds on primordial black hole dark matter

  9. Elastic and Inelastic Scattering of Cosmic-Rays on Sub-GeV Dark Matter

11:45 am, Friday, August 21th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 43210

Ningqiang Song, a postdoc at Queen's University, will give a talk about his recent work in collaboration with Aaron Vincent on microscopic black holes at IceCube and FCC (https://arxiv.org/abs/1907.08628, https://arxiv.org/abs/1912.06656).

  1. Fundamental physics with the diffuse supernova background neutrinos

  2. A Statistical Analysis of the COHERENT Data and Applications to New Physics

  3. A measurement of the cosmic-ray energy spectrum above 2.5×1018 eV using the Pierre Auger Observatory

  4. Features of the energy spectrum of cosmic rays above 2.5×1018 eV using the Pierre Auger Observatory

  5. Ultralight Fermionic Dark Matter

  6. Reconciling hints on axion-like-particles from high-energy gamma rays with stellar bounds

  7. Ultra-high Energy Air Showers Observed by ANITA-IV

  8. High-energy neutrino emission subsequent to gravitational wave radiation from supermassive black hole mergers

11:45 am, Friday, August 14th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 037402

  1. Exciting Prospects for Detecting Late-Time Neutrinos from Core-Collapse Supernovae

  2. Deciphering the Origin of the GeV--TeV Gamma-ray Emission from SS 433

  3. Shedding New Light on Sterile Neutrinos from XENON1T Experiment

  4. Prediction of Tunable Spin-Orbit Gapped Materials for Dark Matter Detection

  5. Tidal Disruption Disks Formed and Fed by Stream-Stream and Stream-Disk Interactions in Global GRHD Simulations

  6. Probing the Milky Way's Dark Matter Halo for the 3.5 keV Line

  7. Dark matter annihilation through nonminimal coupling to gravity as an explanation of the cosmic electron/positron excess

  8. X-ray Searches for Axions from Super Star Clusters

  9. Supernova-scope for the Direct Search of Supernova Axions

  10. An early warning system for electromagnetic follow-up of gravitational-wave events

11:45 am, Friday, August 7th via Zoom

Use this link to access the meeting: ZOOM

with the passcode: 383587

  1. Results of Dark Matter Search using the Full PandaX-II Exposure

  2. Dark Energy Survey Year 1 Results: Constraining Baryonic Physics in the Universe

  3. Changes in cosmic-ray transport properties connect the high-energy features in the electron and proton data

  4. High-Energy Neutrinos and Gamma-Rays from Non-Relativistic Shock-Powered Transients

  5. Milky Way Satellite Census. III. Constraints on Dark Matter Properties from Observations of Milky Way Satellite Galaxies

  6. Search for dark matter signals towards a selection of recently-detected DES dwarf galaxy satellites of the Milky Way with H.E.S.S

  7. Prospects for Heavy WIMP Dark Matter with CTA: the Wino and Higgsino

  8. Lyman-α Constraints on Cosmic Heating from Dark Matter Annihilation and Decay

  9. Hint of a tension between Nuclear physics and Astrophysical observations

  10. A Suggested Alternative to Dark Matter in Galaxies: I. Theoretical Considerations

  11. The Next Generation X-ray Galaxy Survey with eROSITA

  12. A Search for Axionic Dark Matter Using the Magnetar PSR J1745-2900

  13. Constraining the contribution of Gamma-Ray Bursts to the high-energy diffuse neutrino flux with 10 years of ANTARES data

11:45 am, Friday, July 24th via Zoom

Use this link to access the meeting: ZOOM

  1. An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess

  2. Is GW170817 a Multimessenger Neutron Star-Primordial Black Hole Merger?

  3. Charm contribution to ultrahigh-energy neutrinos from newborn magnetars

  4. Measurement of High Energy Gamma Rays from 200 MeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station

  5. Gravitational Waves from Neutrino Asymmetries in Core-Collapse Supernova

  6. Integral X-ray constraints on sub-GeV Dark Mattere

  7. High-Frequency Gravitational-Wave Detection Using a Chiral Resonant Mechanical Element and a Short Unstable Optical Cavity

  8. Back to (Mass-)Square(d) One: The Neutrino Mass Ordering in Light of Recent Data

  9. Constraining photohadronic scenarios for the unified origin of IceCube neutrinos and ultrahigh-energy cosmic rays

  10. Dark Matter Particle in QCD

11:45 am, Friday, July 17th via Zoom

Use this link to access the meeting: ZOOM

  1. An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess

  2. Is GW170817 a Multimessenger Neutron Star-Primordial Black Hole Merger?

  3. What is the price of abandoning dark matter? Cosmological constraints on alternative gravity theories

  4. String Fragmentation in Supercooled Confinementand implications for Dark Matter Cosmological constraints on alternative gravity theories

  5. Dark Nucleosynthesis:Cross-sections and Astrophysical Signals Cosmological constraints on alternative gravity theories

  6. Energy-Momentum portal to dark matter and emergent gravity Cosmological constraints on alternative gravity theories

  7. An Attractive Scenario for Light Dark Matter Direct Detectionn

  8. Relaxing Cosmological Neutrino Mass Bounds withUnstable Neutrinos

  9. First Direct Experimental Evidence of CNO neutrinos

11:45 am, Friday, July 10th via Zoom

Use this link to access the meeting: ZOOM

  1. Constraining the Charge-Sign and Rigidity-Dependence of Solar Modulation

  2. What is the price of abandoning dark matter? Cosmological constraints on alternative gravity theories

  3. Undulating Dark Matter

  4. Precise dark matter relic abundance in decoupled sectors

  5. GeV-scale neutrinos: interactions with mesons andDUNE sensitivity

11:45 am, Friday, July 3rd via Zoom

Use this link to access the meeting: ZOOM

  1. Could the 2.6 M⊙ object in GW190814 be a primordial black hole?

  2. Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through Λb Decays

  3. Exploring the robustness of stellar cooling constraints on light particles

  4. Co-SIMP Miracle (V2, a new section on how our predictions can fit the XENON1T excess)

  5. Split SIMPs with Decays

  6. Telling Solar Neutrinos from Solar Axions When You Can't Shut Off the Sun

  7. Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies

  8. Measurements of the Time-Dependent Cosmic-Ray Sun Shadow with Seven Years of IceCube Data -- Comparison with the Solar Cycle and Magnetic Field Models

  9. Tau neutrinos at DUNE: new strategies, new opportunities

11:45 am, Friday, June 25th via Zoom

Use this link to access the meeting: ZOOM

  1. Low-Mass Dark Matter Search with the DarkSide-50 Experiment

  2. Constraints on Sub-GeV Dark Matter-Electron Scattering from the DarkSide-50 Experiment

  3. Light Dark Matter Search with Ionization Signals in XENON1T

  4. Kilonova Luminosity Function Constraints based on Zwicky Transient Facility Searches for 13 Neutron Star Mergers

  5. Recurrent Neutrino Emission from Supermassive Black Hole Mergers

  6. Primordial Black Hole Dark Matter and the LIGO/Virgo observations

  7. Dark matter capture in celestial objects: light mediators, self-interactions, and complementarity with direct detection

  8. Muon g-2 and EDM experiments as muonic dark matter detectors

  9. Scalar Direct Detection: In-Medium Effects

  10. GW190814: Gravitational Waves from the Coalescence of a 23 M⊙ Black Hole with a 2.6 M⊙ Compact Object

  11. Does Matter Matter? Using the mass distribution to distinguish neutron stars and black holes

  12. An incomplete list of recent papers on the XENON1T electron recoil excess:

    1. Collider Constraints on a Dark Matter Interpretation of the XENON1T Excess

    2. XENON1T observes tritium

    3. Shining dark matter in Xenon1T

    4. Can nonstandard neutrino interactions explain the XENON1T spectral excess?

    5. New limits on dark photons from solar emission and keV scale dark matter

    6. Dark Matter and the XENON1T electron recoil excess

    7. Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling

    8. Xenon1T anomaly: Inelastic Cosmic Ray Boosted Dark Matter

    9. Inelastic Dark Matter Electron Scattering and the XENON1T Excess

    10. XENON1T Anomaly and its Implication for Decaying Warm Dark Matter

    11. Explaining the XENON1T excess with Luminous Dark Matter

    12. Solar axions cannot explain the XENON1T excess

    13. Prospects of Migdal Effect in the Explanation of XENON1T Electron Recoil Excess

11:45 am, Friday, June 19th via Zoom

Use this link to access the meeting: ZOOM

  1. BBN constraints on universally-coupled ultralight scalar dark matter

  2. Observation of Excess Electronic Recoil Events in XENON1T

  3. Probing Dark Photons with Plasma Haloscopes

  4. Gravitational wave signals of dark matter freeze-out

  5. Casting a graph net to catch dark showers

  6. Searching for Dark Matter Signals in Timing Spectra at Neutrino Experiments

  7. New production channels for light dark matter in hadronic showers

  8. XENON1T anomaly from anomaly-free ALP dark matter

11:45 am, Friday, June 12th via Zoom

Use this link to access the meeting: ZOOM

  1. Detecting Planet 9 via Hawking radiation

  2. Cosmic-ray interactions with the Sun using the FLUKA code

  3. BBN constraints on universally-coupled ultralight scalar dark matter

  4. Solar Neutrino Detection Sensitivity in DARWIN via Electron Scattering

  5. Search for dark matter signatures in the gamma-ray emission towards the Sun with the Fermi Large Area Telescope

  6. The TeV gamma-ray luminosity of the Milky-Way and the contribution of H.E.S.S. unresolved sources to VHE diffuse emission

  7. The anomalous magnetic moment of the muon in the Standard Model

  8. Graviballs and Dark Matter

  9. Cosmic Ray Spectrum from 250 TeV to 10 PeV using IceTop

11:45 am, Friday, June 5th via Zoom

Use this link to access the meeting: ZOOM

  1. Detectability of Axion Dark Matter with Phonon Polaritons and Magnons

  2. Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector

  3. HAWC J2227+610 and its association with G106.3+2.7, a new potential Galactic PeVatron

  4. Measuring the eccentricity of GW170817 and GW190425

  5. Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector

  6. Direct limits on the interaction of antiprotons with axion-like dark matter

  7. MAGIC observations of the diffuse γ-ray emission in the vicinity of the Galactic Centre

  8. Antimatter as Macroscopic Dark Matter

  9. Detection of gravitational-wave signals from binary neutron star mergers using machine learning

  10. Jumping the gap: searching for LIGO's biggest black holes

11:45 am, Friday, May 29th via Zoom

Use this link to access the meeting: ZOOM

  1. Probing Lepton Flavor Models at Future Neutrino Experiments

  2. Light and Darkness: consistently coupling darkmatter to photons via effective operators

  3. Cosmic Inflation in Minimal U(1)B−L Model: Implications for (Non) Thermal Dark Matter and Leptogenesis

  4. Thermodynamics of a two-step electroweak phase transition

  5. Constraints on light dark matter particles using white dwarf stars

  6. Storage Ring Probes of Dark Matter and Dark Energy

  7. Light Dark Matter in a minimal extension with two additional real singlets

  8. Escape from the swamp with spectator

  9. The Chiral Puzzle of Life

11:45 am, Friday, May 22nd via Zoom

Use this link to access the meeting: ZOOM

  1. Millisecond Pulsars Modify the Radio-SFR Correlation in Quiescent Galaxies

  2. Resonant Neutrino Self-Interactions

  3. Probing Energetic Light Dark Matter with Multi-Particle Tracks Signatures at DUNE

  4. Higgs Portal From The Atmosphere To Hyper-K

  5. Dark matter searches by the planned gamma-ray telescope GAMMA-400

  6. The Pacific Ocean Neutrino Experiment

  7. Constraining sterile neutrinos by core-collapse supernovae with multiple detectors

  8. High-Energy Neutrino and Gamma-Ray Emission from Tidal Disruption Events and Implications for AT2019dsg

  9. Lectures on Quantum Field Theory

  10. Dark photon dark matter and fast radio bursts

  11. The Chiral Puzzle of Life

11:45 am, Friday, May 15th via Zoom

Use this link to access the meeting: ZOOM

  1. Primordial Black Holes Confront LIGO/Virgo data: Current situation

  2. Searching for Sub-GeV Dark Matter in the Galactic Centre using Hyper-Kamiokande

  3. Comment on "Multiscatter stellar capture of dark matter"

  4. A high-energy neutrino coincident with a tidal disruption event

  5. Radio frequency emissions from dark-matter-candidate magnetized quark nuggets interacting with matter

  6. Implications of a "Fast Radio Burst" from a Galactic Magnetar

  7. Fast Radio Bursts from reconnection events in magnetar magnetospheres

  8. VERITAS Discovery of VHE Emission from the Radio Galaxy 3C 264: A Multi-Wavelength Study

  9. Origin of Sterile Neutrino Dark Matter via Vector Secret Neutrino Interactions