56 citations · 293 across the 14 of their papers we have counts for
16 papers
Line-of-Sight Acceleration-driven waveform corrections for unequal-mass compact binary coalescences
Mohd Asim Ansari, Avinash Tiwari, Sajad A. Bhat +2
A constant line-of-sight acceleration (LOSA) of the centre-of-mass of a quasi-circular compact binary coalescence (CBC) leads to modulations in the gravitational-wave (GW) waveform…
Line-of-sight Acceleration Driven Effects in Eccentric Compact Binary Coalescences
Mohd Asim Ansari, Avinash Tiwari, Sajad A. Bhat +2
The line-of-sight acceleration (LOSA) effect, imprinted in the gravitational wave (GW) signal of an inspiralling compact binary by an external gravitational potential, is one of th…
Gravitational Wave Informed Inference of 21-cm Global Signal Parameters
Avinash Tiwari, Sajad A. Bhat, Tirthankar Roy Choudhury +3
Understanding how and when the first stars and galaxies formed remains one of the central challenges in modern cosmology. These structures emerged during the transition from the Da…
Implications of GW241011 for rotating exotic compact objects
N. V. Krishnendu, Tamara Evstafyeva, Aditya Vijaykumar +17
A number of theoretical proposals have been made for horizonless compact objects with masses and spins similar to those of black holes. While gravitational wave signatures from the…
Testing the nature of GW200105 by probing the frequency evolution of eccentricity
Avinash Tiwari, Sajad A. Bhat, Md Arif Shaikh +1
GW200105 is a compact binary coalescence (CBC) event, consisting of a neutron star and a black hole, observed in LIGO-Virgo-KAGRA's (LVK's) third observing run (O3). Recent reanaly…
Eccentricity evolution consistency test to distinguish eccentric gravitational-wave signals from eccentricity mimickers
Sajad A. Bhat, Avinash Tiwari, Md Arif Shaikh +1
Eccentric compact binary coalescences (CBCs) are expected to be observed in current and future gravitational-wave (GW) detector networks. However, it has been recently pointed out…
Parametrized tests of general relativity using eccentric compact binaries
Sajad A. Bhat, Pankaj Saini, Marc Favata +3
Astrophysical population simulations predict that a subset of dynamically formed binary black holes (BBHs) may possess eccentricity at a gravitational wave (GW) frequ…
Can the Near-Horizon Black Hole Memory be detected through Binary Inspirals?
Sajad A. Bhat, Srijit Bhattacharjee, Shasvath J. Kapadia
The memory effect, in the context of gravitational-waves (GWs), manifests itself in the permanent relative displacement of test masses when they encounter the GWs. A number of work…
Possible Causes of False General Relativity Violations in Gravitational Wave Observations
Anuradha Gupta, K. G. Arun, Enrico Barausse +40
General relativity (GR) has proven to be a highly successful theory of gravity since its inception. The theory has thrivingly passed numerous experimental tests, predominantly in w…
A study of the Inspiral-Merger-Ringdown Consistency Test with gravitational-wave signals from compact binaries in eccentric orbits
Md Arif Shaikh, Sajad A. Bhat, Shasvath J. Kapadia
The Inspiral Merger Ringdown Consistency Test (IMRCT) is one among a battery of tests of general relativity (GR) employed by the LIGO-Virgo-KAGRA (LVK) collaboration. It is used to…
Eccentricity-induced systematic error on parametrized tests of general relativity: Hierarchical Bayesian inference applied to a binary black hole population
Pankaj Saini, Sajad A. Bhat, Marc Favata +1
One approach to testing general relativity (GR) introduces free parameters in the post-Newtonian (PN) expansion of the gravitational-wave (GW) phase. If systematic errors on these…
Premerger localization of intermediate mass binary black holes with LISA and prospects of joint observations with Athena and LSST
Pankaj Saini, Sajad A. Bhat, K. G. Arun
The planned Laser Interferometric Space Antenna (LISA) will be able to detect gravitational waves (GWs) from intermediate mass binary black holes (IMBBHs) in the mass range $\sim 1…
Systematic bias on the inspiral-merger-ringdown consistency test due to neglect of orbital eccentricity
Sajad A. Bhat, Pankaj Saini, Marc Favata +1
The inspiral-merger-ringdown (IMR) consistency test checks the consistency of the final mass and final spin of a binary black hole merger remnant, independently inferred via the in…
Cooling of Dark-Matter Admixed Neutron Stars with density-dependent Equation of State
Sajad A. Bhat, Avik Paul
We propose a dark-matter (DM) admixed density-dependent equation of state where the fermionic DM interacts with the nucleons via Higgs portal. Presence of DM can hardly influence t…
Neutron star equation of state and GW170817
Sajad A. Bhat, Debades Bandyopadhyay
Properties of neutron stars in GW170817 are investigated using different equations of state (EoS) involving nucleons, hyperons, quarks resulting in neutron stars.…
Moment of inertia, quadrupole moment, Love number of neutron star and their relations with strange matter equations of state
D. Bandyopadhyay, S. A. Bhat, P. Char +1
We investigate the impact of strange matter equations of state involving hyperons, Bose-Einstein condensate of mesons and first order hadron-quark phase transition on mom…