Research Works
Research Works
Embedded Files
Eccentric Compact Binaries
Gravitational waves from eccentric binaries are expected to be observed in the future. Existing pipelines and frameworks must be extended to account for these systems. I have worked on enhancing early warning and sky localization for eccentric NSBH and BNS systems. In addition, I have developed an analytical framework to systematically study deviations in standard eccentric binary orbital motion as reflected in the gravitational-wave signal.
Papers: 2507.07021v1 , 2508.06245v2
Neutron Stars Imprint in Gravitational Waves
I am exploring the potential markers that could be detected in gravitational wave signals originating from isolated neutron stars and neutron star binaries. Identifying these signatures could provide valuable insights. In a recent work, I examined the imprint of strong magnetic fields and the dephasing they induce, along with the prospects of measuring these effects in third-generation and deci-hertz gravitational-wave detectors. Our findings suggest that magnetar-level fields could be discerned in the GW signal.
Paper: 2508.08234v2
Constraints on Compact Star Physics
Different properties of compact stars, as well as the processes and phenomena associated with them, can be constrained through gravitational-wave observations. Continuous gravitational-wave searches have so far resulted in no detections. Using this non-detection, we place constraints on the abundance of deformed galactic compact objects. Hypothetical compact stars such as hybrid stars and quark stars have long been predicted to sustain large deformations. Our analysis indicates their paucity, with N_tot < 100 for ellipticities of 10^−5.
Paper: ApJ 2024
Quark-Hadron Phase transition in Isolated Neutron Stars
The existence of hybrid stars (neutron stars with quark cores) and quark stars is an open problem in astrophysics. In the dense cores of a neutron star, the nuclear matter is prone to undergo conversion to quark matter (phase transition), which can result in the formation of quark/hybrid stars. I have modeled plausible phase transition scenarios (shock-induced and spin-down induced) in a neutron star and obtained its observational signatures. I also extracted the gravitational waves and quantified the deconfinement aftermath (weak decays, neutrino energy deposition, etc).
Papers: ApJ 2O18 , ApJ 2020 , MNRAS 2021 , Phy.Rev.C 2022
Gravitational Wave Lensing
Gravitational waves (GWs) emitted from astrophysical sources can get lensed on their way to Earth, similar to electromagnetic waves. Lenses could be Galaxy, Galaxy Clusters, Dark matter halos, etc. Strong Lensing leads to Multiple Images, Time delays between images (hours/weeks/months), and Magnification. I am performing astrophysical simulations to address few questions related to lensing phenomena.
Black Hole Perturbation Theory
During my master's years, I worked on BTZ (Bañados, Teitelboim, and Zanelli) black holes. BTZ black hole is a solution of Einstein's equation in 2+1 dimensional gravity. BTZ black hole has been studied extensively in the literature for insights into classical and quantum gravity. I carried out a study on the scalar field in BTZ black hole background. I obtained the quasinormal modes, Hawking emission rate, and emission spectrum. A significant difference is that the exact forms of solution at the horizon are used, unlike the approximate forms used in previous studies for various black holes. The PDF of the dissertation can be found here.
Click to view my publication list and articles:
For project reports (internships, dissertation, etc): link
Page updated
Google Sites
Report abuse