11 papers
Probing the spin of compact objects with gravitational microlensing of gravitational waves
Gopalkrishna Prabhu, Uddeepta Deka, Sumanta Chakraborty +1
Propagating gravitational waves (GWs) can encounter a massive object (lens) whose gravitational radius is comparable to the wavelength of the GWs (wave-optics regime). The resultin…
Response of a Kerr black hole to a generic tidal perturbation
Rajendra Prasad Bhatt, Sumanta Chakraborty, Sukanta Bose
We derive the response, the real part of which provides the tidal Love numbers, for non-extremal as well as extremal Kerr black holes under generic tidal perturbations. Our results…
Extreme mass ratio inspirals in rotating dark matter spikes
Soumodeep Mitra, Nicholas Speeney, Sumanta Chakraborty +1
Gravitational wave (GW) signals from extreme mass ratio inspirals (EMRIs) are a key observational target for the Laser Interferometer Space Antenna (LISA). The waveforms may be aff…
Probing the existence of a minimal length through compact binary inspiral
N. V. Krishnendu, Aldo Perri, Sumanta Chakraborty +1
Existence of a minimal length in spacetime geometries avoids several singular situations involving quantum theory and gravity. In this work, we show that the existence of such a mi…
Singularity avoidance from path integral
Ribhu Paul, Sumanta Chakraborty
We have demonstrated that the wave functional describing the quantum nature of the spacetime inside the black hole horizon, vanishes near the singularity, using the path integral f…
Tidal Love numbers and quasi-normal modes of the Schwarzschild-Hernquist black hole
Sumanta Chakraborty, Geoffrey Compère, Ludovico Machet
We derive the model of the Schwarzschild black hole immersed into a dark matter halo with a relativistic Hernquist profile, the Schwarzschild-Hernquist black hole, and obtain its t…