73 citations · 142 across the 14 of their papers we have counts for
15 papers
Spinning test particles in a weak gravitational wave and the memory effect
Ritwik Acharyya, Shailesh Kumar, Sayan Kar
In this work, we investigate the worldline deviation of spinning test particles in a weak gravitational wave (GW) spacetime. Within the pole-dipole approximation and the Tulczyjew…
Massive scalar fields in eccentric regime: Detectability and constraints from LISA observations of extreme mass-ratio inspirals
Tieguang Zi, Shailesh Kumar, Jun-Kun Zhao +3
Extreme mass-ratio inspirals (EMRIs) are among the most promising sources for future space-based gravitational wave (GW) observatories and provide sensitive probes of additional fu…
Dynamical tidal response of regular black holes: Perturbative analysis and shell EFT interpretation
Arpan Bhattacharyya, Naman Kumar, Shailesh Kumar
We compute the frequency-dependent quadrupolar tidal response of Bardeen, Hayward, and Fan-Wang regular black holes in the polar and axial sectors by solving the coupled gravitatio…
Probing beyond-vacuum general relativistic effects with extreme mass-ratio inspirals
Tieguang Zi, Mostafizur Rahman, Shailesh Kumar
We examine extreme mass-ratio inspirals (EMRIs) as probes of beyond-vacuum general relativistic effects, accounting for both astrophysical environments and scalar Gauss-Bonnet (sGB…
Gravitational memory meets astrophysical environments: exploring a new frontier through osculations
Rishabh Kumar Singh, Shailesh Kumar, Abhishek Chowdhuri +1
We study how dark matter environments influence nonlinear gravitational memory from intermediate-mass-ratio binaries. Incorporating environmental effects from the dark matter gravi…
Love beyond Einstein: Metric reconstruction and Love number in quadratic gravity using WEFT
Arpan Bhattacharyya, Saptaswa Ghosh, Naman Kumar +2
We study tidal Love numbers of static black holes in four-dimensional quadratic theory of gravity, extending the result of GR. We use worldline effective field theory (WEFT) method…
Probing scalar field with generic extreme mass-ratio inspirals around Kerr black holes
Tieguang Zi, Shailesh Kumar
The future space-based gravitational wave observatories are expected to provide unprecedented opportunities to explore intricate characteristics of black hole binaries, particularl…
Extreme mass-ratio inspirals and extra dimensions: Insights from modified Teukolsky framework
Shailesh Kumar, Tieguang Zi, Arpan Bhattacharyya
Extreme mass-ratio inspirals (EMRIs) offer a promising avenue to test extra-dimensional physics through gravitational wave (GW) observations. In this work, we study equatorial ecce…
Imprints of extra dimensions in eccentric extreme-mass-ratio inspirals gravitational waveforms
Shailesh Kumar, Tieguang Zi, Arpan Bhattacharyya
Studies regarding extra-dimensions have been of great interest in modern theoretical physics, including their observational consequences from future gravitational wave (GW) observa…
Gravitational waves from regular black holes in extreme mass-ratio inspirals
Shailesh Kumar, Tieguang Zi
We analyze a rotating regular black hole spacetime with an asymptotically Minkowski core, focusing on extreme mass-ratio inspiral (EMRIs) where a stellar-mass object inspirals a su…
Probing deviations to Kerr geometry with extreme mass-ratio inspirals
Shailesh Kumar
One of the primary research aims of the Laser Interferometer Space Antenna (LISA) mission is to comprehensively map the Kerr spacetime, a fundamental pursuit in the realm of genera…
Eccentric extreme mass-ratio inspirals: A gateway to probe quantum gravity effects
Tieguang Zi, Shailesh Kumar
We examine a loop quantum gravity (LQG) inspired rotating black hole, treating it as a central supermassive black hole (SMBH) in an extreme mass-ratio inspiral (EMRI) system, where…
Exploring waveforms with non-GR deviations for extreme mass-ratio inspirals
Shailesh Kumar, Rishabh Kumar Singh, Abhishek Chowdhuri +1
The fundamental process of detecting and examining the polarization modes of gravitational waves plays a pivotal role in enhancing our grasp on the precise mechanisms behind their…
Prospects of detecting deviations to Kerr geometry with radiation reaction effects in EMRIs
Abhishek Chowdhuri, Arpan Bhattacharyya, Shailesh Kumar
Direct detection of gravitational waves and binary black hole mergers have proven to be remarkable investigations of general relativity. In order to have a definitive answer as to…
Probing astrophysical environment with eccentric extreme mass-ratio inspirals
Mostafizur Rahman, Shailesh Kumar, Arpan Bhattacharyya
The discovery of gravitational waves and black holes has started a new era of gravitational wave astronomy that allows us to probe the underpinning features of gravity and astrophy…