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15 papers · 2 filters
The Hitchhiker's guide to the galaxy catalog approach for gravitational wave cosmology
Jonathan R. Gair, Archisman Ghosh, Rachel Gray +28
We outline the ``dark siren'' galaxy catalog method for cosmological inference using gravitational wave (GW) standard sirens, clarifying some common misconceptions in the implement…
Beyond the linear tide: impact of the non-linear tidal response of neutron stars on gravitational waveforms from binary inspirals
Hang Yu, Nevin N. Weinberg, Phil Arras +2
Tidal interactions in coalescing binary neutron stars modify the dynamics of the inspiral and hence imprint a signature on their gravitational wave (GW) signals in the form of an e…
SCoRe: A New Framework to Study Unmodeled Physics from Gravitational Wave Data
Guillaume Dideron, Suvodip Mukherjee, Luis Lehner
A confident discovery of physics beyond what has been consistently modeled from gravitational wave (GW) data requires a technique that can distinguish between noise artifacts and u…
Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes
Rajes Ghosh, Mostafizur Rahman, Akash K Mishra
Black hole solutions in general relativity come with pathologies such as singularity and mass inflation instability, which are believed to be cured by a yet-to-be-found quantum the…
Hawking radiation from acoustic black holes in hydrodynamic flow of electrons
Shreyansh S. Dave, Oindrila Ganguly, Saumia P. S. +1
Acoustic black holes are formed when a fluid flowing with subsonic velocities, accelerates and becomes supersonic. When the flow is directed from the subsonic to supersonic region,…
Multipole moments on the common horizon in a binary-black-hole simulation
Yitian Chen, Prayush Kumar, Neev Khera +8
We construct the covariantly defined multipole moments on the common horizon of an equal-mass, non-spinning, quasicircular binary-black-hole system. We see a strong correlation bet…
Observational limits on the rate of radiation-driven binary black hole capture events
Michael Ebersold, Shubhanshu Tiwari, Leigh Smith +6
Dense astrophysical environments like globular clusters and galactic nuclei can host hyperbolic encounters of black holes which can lead to gravitational-wave driven capture. There…
Removing degeneracy and multimodality in gravitational wave source parameters
Javier Roulet, Seth Olsen, Jonathan Mushkin +4
Quasicircular binary black hole mergers are described by 15 parameters, of which gravitational wave observations can typically constrain only independent combinations to…
Prospects for the observation of continuous gravitational waves from spinning neutron stars lensed by the galactic supermassive black hole
Soummyadip Basak, Aditya Kumar Sharma, Shasvath J. Kapadia +1
We study the prospects of detecting continuous gravitational waves (CGWs) from spinning neutron stars (NSs), gravitationally lensed by the galactic supermassive black hole. Assumin…
Modeling Compact Binary Merger Waveforms Beyond General Relativity
Gabriel S. Bonilla, Prayush Kumar, Saul A. Teukolsky
The parameterized post-Einsteinian framework modifies inspiral waveform models to incorporate effects beyond General Relativity. We extend the existing model into the merger-ringdo…
Four-mode squeezed states in de Sitter space: A study with two field interacting quantum system
Sayantan Choudhury, Sudhakar Panda, Nilesh Pandey +1
In this paper we study the application of four-mode squeezed states in the cosmological context, studying two weakly coupled scalar fields in the planar patch of the de Sitter spac…
First joint observation by the underground gravitational-wave detector, KAGRA, with GEO600
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669
We report the results of the first joint observation of the KAGRA detector with GEO600. KAGRA is a cryogenic and underground gravitational-wave detector consisting of a laser inter…
Detection and parameter estimation challenges of Type-II lensed binary black hole signals
Aditya Vijaykumar, Ajit Kumar Mehta, Apratim Ganguly
Strong lensing of {gravitational-wave signals} can produce three types of images, denoted as Type-I, Type-II and Type-III, corresponding to the minima, saddle and maxima of the len…
Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669
Results are presented for a semi-coherent search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1, using a hidden Markov model (HMM) to allow for spin…
All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1667
We present results of an all-sky search for continuous gravitational waves which can be produced by spinning neutron stars with an asymmetry around their rotation axis, using data…