7 papers
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…
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…
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…
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…