Year 2013-2014

August 14, 2014

• • Piscionere et al., http://arxiv.org/abs/1407.6740, "The Spatial Distribution of Satellite Galaxies Within Halos: Measuring the Very Small Scale Angular Clustering of SDSS Galaxies"

  • Mantz et al., http://arxiv.org/abs/1407.4516, "Weighing the Giants IV: Cosmology and Neutrino Mass"

August 07, 2014

• • Dayal et al, http://arxiv.org/pdf/1408.1102.pdf, "Early galaxy formation in warm dark matter cosmologies"

  • Guo et al., http://arxiv.org/abs/1407.4811, "Velocity Bias from the Small Scale Clustering of SDSS-III BOSS Galaxies"

July 31, 2014

Talk by Aurélien Benoit-Lévy: "Cross-correlating Planck, SPT, DES, Fermi and low-redshift galaxy surveys"

By deflecting the trajectories of the CMB photon from the last scattering surface, gravitational lensing imprints statistical signatures of the matter distribution in the observed temperature and polarization anisotropies of the CMB. Extracting this signature permits the reconstruction of the lensing potential, a powerful probe of the matter distribution. Matter distribution can also be probed by galaxy surveys thus providing additional information that can be correlated with the CMB lensing potential. In this talk I will present some aspects of these cross-correlations focusing on the complementary of DES and Planck/SPT. I will also present some recent work that focuses on the correlation of the gamma ray sky observed by the Fermi satellite and catalogues of nearby galaxies.

July 24, 2014

• • Conselice et al, http://arxiv.org/pdf/1407.3811.pdf, "Galaxy Formation as a Cosmological Tool. I: The Galaxy Merger History as a Measure of Cosmological Parameters"

  • Bocquet et al., http://arxiv.org/abs/1407.2942, "Mass Calibration and Cosmological Analysis of the SPT-SZ Galaxy Cluster Sample Using Velocity Dispersion σv and X-ray YX Measurements"

  • Guo et al., http://arxiv.org/abs/1407.4811, "Velocity Bias from the Small Scale Clustering of SDSS-III BOSS Galaxies"

July 17, 2014

• • Sanchez et al., http://arxiv.org/abs/1406.4407, "Photometric redshift analysis in the Dark Energy Survey Science Verification data"

  • Banerji et al., http://arxiv.org/abs/1407.3801, "Combining Dark Energy Survey Science Verification Data with Near Infrared Data from the ESO VISTA Hemisphere Survey"

  • Bocquet et al., http://arxiv.org/abs/1407.2942, "Mass Calibration and Cosmological Analysis of the SPT-SZ Galaxy Cluster Sample Using Velocity Dispersion σv and X-ray YX Measurements"

July 10, 2014

• • Adhikari et al, http://arxiv.org/pdf/1407.1128.pdf, "Three-point Galaxy-galaxy Lensing as a Probe of Dark Matter Halo Shapes."

July 3, 2014

• • Hashim et al, http://arxiv.org/pdf/1407.0379.pdf, "Rotation Curve with MOND and Dark Matter Halo Profile for ESO138-G014."

  • Schmidt et al, http://arxiv.org/abs/1407.0031, "Inferring the Redshift Distribution of the Cosmic Infrared Background"

  • Lage and Farrar, http://arxiv.org/pdf/1406.6703v1.pdf, "The Bullet Cluster is not a Cosmological Anomaly"

  • Dijkstra, http://arxiv.org/pdf/1406.7292v1.pdf, "Ly_alpha Emitting Galaxies as a Probe of Reionization"

June 15, 2014

• • Szapudi et al, http://arxiv.org/pdf/1406.3622v1.pdf, "The Cold Spot in the Cosmic Microwave Background: the Shadow of a Super Void"

June 19, 2014

• • Lopes et al, http://arxiv.org/pdf/1402.0682v1.pdf, "Helioseismology with Long Range Dark-Matter Baryon Interactions"

  • Ursino et al, http://arxiv.org/pdf/1405.5225v1.pdf, "X-ray and Sunyaev-Zeldovich Properties of the Warm-Hot Intergalactic Medium"

June 12, 2014

• • Eifler et al., http://arxiv.org/abs/1405.7423, "Accounting for Baryonic Effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA"

  • Lopes and Silk, http://arxiv.org/abs/1405.0292, "Helioseismology and Astroseismolgy: Looking for Gravitational Waves in Acoustic Oscillations"

  • Dawson et al., http://arxiv.org/abs/1406.1506, "The Ellipticity Distribution of Ambiguously Blended Objects"

  • Moffat, http://arxiv-web3.library.cornell.edu/pdf/1406.2609v1.pdf, "Superluminal Gravitational Waves"

June 5, 2014

• • Eifler et al., http://arxiv.org/abs/1405.7423, "Accounting for Baryonic Effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA"

  • Hellwig et al., http://arxiv.org/pdf/1401.0706.pdf, "A clear and measurable signature of modified gravity in the galaxy velocity field."

  • Cautun et al., http://arxiv.org/abs/1405.7700, "Subhalo statistics of galactic halos: beyond the resolution limit"

May 15, 2014

• • Okura and Futamase, http://arxiv.org/pdf/1405.1539v1.pdf, "A new method of weak lensing shear measurement using 0th order ellipticity and ERA."

May 8, 2014

Talk by Abby Vieregg: "Detection of B-mode Polarization on Degree Angular Scales with the BICEP2 Experiment at the South Pole"

Inflation, the superluminal expansion of the universe during the first moments after the Big Bang, predicts a Cosmic Gravitational-Wave Background, which in turn imprints a faint but unique signature of “B-mode” polarization of the Cosmic Microwave Background (CMB) at degree angular scales. Detection of the B-mode signature from inflation would constitute strong evidence for inflation and a test of inflationary models at the GUT scale. BICEP2, which observed from the South Pole from 2010-2012, is a microwave polarimeter that uses antenna-coupled Transition Edge Sensor arrays to observe the CMB at degree angular scales and is specifically designed to search for this signature of inflation. BICEP2 is the second experiment in a four-stage line of degree-scale polarimeters at the South Pole. I will discuss the recent detection of B-mode polarization at degree angular scales with BICEP2, and the promise for follow-up to this measurement with the Keck Array (currently observing) and BICEP3 (deploying this year).

May 1, 2014

• • Hearin et al., http://arxiv.org/pdf/1404.6524.pdf, " Beyond Halo Mass: Galactic Conformity as a Smoking Gun of Central Galaxy Assembly Bias"

  • Gontcho A Gontcho et al, http://arxiv.org/pdf/1404.7425v1.pdf, "On the effect of the ionising background on the Ly-alpha. forest autocorrelation function"

  • D'Amico et al, http://arxiv.org/pdf/1404.6478v1.pdf, "Non-Gaussianity after BICEP2"

  • Dai et al, http://arxiv.org/pdf/1404.6704.pdf, "Reheating constraints to inflationary models"

• Schellenberger et al., http://arxiv.org/abs/1404.7130, "XMM-Newton and Chandra Cross Calibration Using HIFLUGCS Galaxy Clusters"

  • Han et al., http://arxiv.org/abs/1404.6828, "Galaxy and Mass Assembly (GAMA): The halo mass of galaxy groups from maximum-likelihood weak lensing"

April 24, 2014

• • Yin-Zhe Ma et al., http://arxiv.org/abs/1404.4808, "Probing the diffuse baryon distribution with the lensing-tSZ cross-correlation"

  • Gastaldello et al., http://arxiv.org/abs/1404.5633, "Dark matter-baryons separation at the lowest mass scale: the Bullet Group"

  • Shirasaki et al., http://arxiv.org/abs/1404.5503, "Cross-Correlation of Cosmic Shear and Extragalactic Gamma-ray Background: Constraints on the Dark Matter Annihilation Cross-Section"

April 17, 2014

• • Clampitt & Jain, http://arxiv.org/abs/1404.1834, "Lensing Measurements of the Mass Distribution in SDSS Voids"

April 10, 2014

• • Serra et al., http://arxiv.org/abs/1404.1933, "Cross-correlation of Cosmic Infrared Background Anisotropies with Large Scale Structure"

  • Mahdi et al., http://arxiv.org/abs/1404.1644, "Gravitational lensing in WDM cosmologies: The cross section for giant arcs"

April 3, 2014

• • Dooley et al., http://arxiv.org/abs/1403.6828, "The Effects of Varying Cosmological Parameters on Halo Substructure"

March 27, 2014

• • Dodelson, http://arxiv.org/abs/1403.6310, "How much can we learn about the physics of inflation?"

March 20, 2014

• • Stroe et al., http://arxiv.org/abs/1403.4255, "The highest-frequency detection of a radio relic: 16-GHz AMI observations of the 'Sausage' cluster"

  • Beutler et al., http://arxiv.org/abs/1403.4599, "The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Signs of neutrino mass in current cosmological datasets"

March 13, 2014

• • Verde et al., http://arxiv.org/pdf/1403.2181.pdf, "The expansion rate of the intermediate universe."

February 27, 2014

• • Ebeling et. al. http://arxiv.org/abs/1402.3769, "Spectroscopic redshifts of galaxies within the Frontier Fields"

  • Capela et al. http://arxiv.org/pdf/1402.4671.pdf, Comment on Loeb et al, Primordial black hold limits"

  • Clampitt et al. http://arxiv.org/pdf/1402.3302.pdf, "Detection of Stacked Filament Lensing"

February 13, 2014

• • von der Linden et al., http://arxiv.org/abs/1402.2670, "Robust Weak-lensing Mass Calibration of Planck Galaxy Clusters"

  • Hill & Spergel, http://arxiv.org/abs/1312.4525, "Detection of Thermal SZ -- CMB Lensing Cross-Correlation in Planck Nominal Mission Data"

  • Bulbul et al., http://arxiv.org/abs/1402.2301, "Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters"

February 6, 2014

• • Alpaslan et al., http://arxiv.org/abs/1401.7331, "Galaxy and Mass Assembly (GAMA): Fine filaments of galaxies detected within voids"

  • Ebeling, et al, http://arxiv.org/abs/1312.6135, "Jellyfish: Evidence of extreme ram-pressure stripping in massive galaxy clusters"

January 30, 2014

• • Hall & Taylor, http://arxiv.org/abs/1401.6018, "Intrinsic alignments in the cross-correlation of cosmic shear and CMB weak lensing"

  • Schmidt et al., http://arxiv.org/abs/1401.0532, "Through the looking GLASS: HST spectroscopy of faint galaxies lensed by the Frontier Fields cluster MACS0717.5+3745"

  • de Putter et al., http://arxiv.org/abs/1401.7022, "Inflationary Freedom and Cosmological Neutrino Constraints"

  • Kitching et al., http://arxiv.org/abs/1401.6842, "3D Cosmic Shear: Cosmology from CFHTLenS"

January 23, 2014

• • Bernstein & Gruen, http://arxiv.org/abs/1401.2636, "Resampling images in Fourier domain"

January 16, 2014

• • Hikage, http://arxiv.org/abs/1401.1246, "Constraining Halo Occupation Distribution and Cosmic Growth Rate using Multipole Power Spectrum"

• Jee et al., http://arxiv.org/abs/1401.3356, "Hubble Space Telescope/Advanced Camera for Surveys Confirmation of the Dark Substructure in A520"

• Bacon et al., http://arxiv.org/abs/1401.3694, "Cosmology with Doppler Lensing"

January 9, 2014

• • report on DES session during AAS223

  • Bonaldi et al, http://arxiv.org/abs/1401.1387, "Cosmological constraints from Sunyaev-Zeldovich cluster counts: an approach to account for missing redshifts"

December 12, 2013

• • Spectra Cross Correlations for Redshifts:

  • http://adsabs.harvard.edu/abs/1979AJ.....84.1511T

  • http://arxiv.org/pdf/1309.3579v1.pdf

December 5, 2013

• • van Waerbeke et al., http://arxiv.org/abs/1310.5721, "Detection of warm and diffuse baryons in large scale structure from the cross-correlation of gravitational lensing and the thermal Sunyaev-Zeldovich effect"

  • Camera et al., http://arxiv.org/abs/1311.6383, "Magnification bias as a novel probe for primordial magnetic fields"

Talk by Nico Hamaus: "Cosmic Voids: Tracers of Large-Scale Structure"

Redshift surveys measure the location of millions of galaxies in the observable Universe, thereby constructing a three-dimensional map ofits large-scale structure. This structure is characterized by dense clusters of galaxies, connected by filaments and sheets of lower number density. The remaining and dominant volume within this cosmic web is taken up by voids, vast regions of relatively empty space. While clusters, filaments and sheets have all entered different stages of non-linear evolution during cosmic history, voids represent structures that more closely related to the initial conditions of the Universe.

I will discuss the prospects of considering cosmic voids as tracers of large-scale structure. While the clustering of voids alone yields a poor signal-to-noise ratio, when combined with the clustering statistics of galaxies, some interesting features emerge that may be useful for cosmological applications in the future. I will present some recent results obtained from numerical simulations and discuss their implications.

November 21, 2013 (moved to PRB M2015)

Talk by Jill Naiman: "Gas Retention and Accumulation in Dwarf Galaxies: Implications for Star Formation"

The effective supply and retention of gas in shallow gravitational potentials is a problem with implications in a diverse set of astrophysical systems. In particular, the magnitude of gas flows into mature dwarf galaxies can have large impacts on the star formation histories in these systems. In this talk, computational techniques will be used to show how such weakly bound gravitational structures might be able to accumulate gas effectively. The implications for star formation in dwarf galaxies after their incorporation into a larger host halo will be presented.

November 14, 2013 (at 13:15 due to talk by Biard lecturer Julianne Dalcanton at 12:00 in McPherson 4054)

Talk by Ben Shappee: "ASAS-SN: The All Sky Automated Survey for SuperNovae"

November 7, 2013

• • van Daalen et al: The importance of baryons in determining halo-matter correlations

  • Bel and Marinoni: The newly proposed galaxy clustering ratio statistic

October 31, 2013

• • The void "controversy": our original paper, the work of Nadathur & Hotchkiss, our response, and their response to our response. We also have a new void catalog of SDSS DR9 voids.

  • Short talk by Elisabeth Krause (visiting from U Penn)

  • Time and interest permitting, brief discussion on the following papers:

    • Blake et al: Topology from the WiggleZ survey

    • Hudson et al., http://arxiv.org/abs/1310.6784, "CFHTLenS: Co-evolution of galaxies and their dark matter haloes"

    • Gruen et al., http://arxiv.org/abs/1310.6744, "Weak lensing analysis of SZ-selected clusters of galaxies from the SPT and Planck surveys"

October 24, 2013

Talk by Khee-Gan Lee: "Mapping the z~2 Cosmic Web with Lyman-alpha Forest Tomography"

I will discuss the technique of Lyman-alpha forest tomography, in which the Lyman-alpha forest absorption from an extremely dense grid (>500 per sq deg) of background sources is used to make a full 3D `tomographic' map of large-scale structure at z~2. Using empirical luminosity functions of QSOs and LBGs, I will show that at apparent depths of g~24, the background sources are separated by comoving transverse distances of ~3 h^-1 Mpc thus enabling mapping on that resolution. Using simulations, I will show that just S/N~4 per angstrom on g=24 background sources is sufficient to generate maps with ~3 h^-1 Mpc comoving. This requires just several hrs of integration on existing spectrographs on 8-10m telescopes, e.g. VLT-VIMOS and Keck-LRIS. I will introduce CLAPTRAP, a survey to map out 1 sq deg in the COSMOS field over a comoving volume of 10^6 h^-3 Mpc^3. The resulting maps can be used to study z~2 properties as a function of their large-scale environment, characterize the topology of large-scale structure, and find galaxy protoclusters.

October 17, 2013

• • Ford et. al., http://arxiv.org/abs/1310.2295, "Cluster Magnification & the Mass-Richness Relation in CFHTLenS"

  • Nishimichi & Oka, http://arxiv.org/abs/1310.2672, "Simulating the Anisotropic Clustering of LRGs with Subhalos"

  • (companion paper to above) Oka et. al., http://arxiv.org/abs/1310.2820, "Simultaneous constraints on the growth of structure and cosmic expansion from the multipole power spectra of SDSS DR7 LRG sample"

October 10, 2013

• • Viola et al., http://arxiv.org/abs/1309.7844, "Probability Distributions of Ellipticity"

• Ross et. al., http://arxiv.org/pdf/1310.1106v1.pdf, "The Clustering of Galaxies in the SDSS-III DR10 Baryon Oscillation Spectroscopic Survey: No Detectable Colour Dependence of Distance Scale or Growth Rate Measurements"

October 3, 2013

• • Taruya et. al., http://arxiv.org/abs/1309.6783, "Beyond consistency test of gravity with redshift-space distortions at quasi-linear scales"

  • Bahcall and Kulier, http://arxiv.org/abs/1310.0022, "Tracing Mass and Light in the Universe: Where is the Dark Matter?"

  • Darling, http://arxiv.org/abs/1310.0500, "Objects Appear Smaller as They Recede: How Proper Motions Can Directly Reveal the Cosmic Expansion, Provide Geometric Distances, and Measure the Hubble Constant"

September 26, 2013

• • Jee et. al., http://arxiv.org/abs/1309.5097, "Weighing El Gordo"

September 19, 2013

• • Agarwal et al.,http://arxiv.org/abs/1309.2954, "Characterizing unknown systematics in large scale structure surveys"

  • Falco et al., http://arxiv.org/abs/1309.2950, "A new method to measure the mass of galaxy clusters"

September 12, 2013

• • Lee et al., http://arxiv.org/abs/1309.1477, "Observational Requirements for Lyman-alpha Forest Tomographic Mapping of Large-Scale Structure at z ~ 2"

  • Oesch et al., http://arxiv.org/abs/1309.2280, "The Most Luminous z~9-10 Galaxy Candidates yet Found: The Luminosity Function, Cosmic Star-Formation Rate, and the First Mass Density Estimate at 500 Myr"

September 5, 2013

• • Graff et al., http://arxiv.org/abs/1309.0790, "SKYNET: an efficient and robust neural network training tool for machine learning in astronomy"

  • Boone et al, http://arxiv.org/abs/1308.6707, "Discovery of a strongly lensed Herschel drop-out, a 'normal' dusty galaxy at z=6.1?"

August 29, 2013

• • Croton, http://arxiv.org/abs/1308.4150, "Damn you, little h!"

  • Levinson Sobel, http://arxiv.org/abs/1308.6167, "Analytic PSF Correction for Gravitational Flexion Studies"

  • de Putter et al., http://arxiv.org/abs/1308.6070, "The Synergy between Weak Lensing and Galaxy Redshift Surveys"

August 22, 2013

• • Kacprzak et al., http://arxiv.org/abs/1308.4663, "Sersic galaxy models in weak lensing shape measurement: model bias, noise bias and their interaction"

August 15, 2013

• • Tempel et al., http://arxiv.org/abs/1308.2533, "Detecting filamentary pattern in the cosmic web: a catalogue of filaments for the SDSS"

  • Biviano et al., http://arxiv.org/abs/1307.5867, "CLASH-VLT: The mass, velocity-anisotropy, and pseudo-phase-space density profiles of the z=0.44 galaxy cluster MACS 1206.2-0847"