112 citations · 237 across the 7 of their papers we have counts for
33 papers
Bound on photon circular orbits in general relativity and beyond
Sumanta Chakraborty
Existence of a photon circular orbit can tell us a lot about the nature of the underlying spacetime, since it plays a pivotal role in the understanding of the characteristic signat…
The Life and Science of Thanu Padmanabhan
Jasjeet Singh Bagla, Krishnakanta Bhattacharya, Sumanta Chakraborty +21
Thanu Padmanabhan was a renowned Indian theoretical physicist known for his research in general relativity, cosmology, and quantum gravity. In an extraordinary career spanning fort…
Gravitational multipole moments for asymptotically de Sitter spacetimes
Sumanta Chakraborty, Sk Jahanur Hoque, Roberto Oliveri
We provide a prescription to compute the gravitational multipole moments of compact objects for asymptotically de Sitter spacetimes. Our prescription builds upon a recent definitio…
Looking for extra dimensions in the observed quasi-periodic oscillations of black holes
Indrani Banerjee, Sumanta Chakraborty, Soumitra SenGupta
Quasi-periodic oscillations, often present in the power density spectrum of accretion disk around black holes, are useful probes for the understanding of gravitational interaction…
Tidal heating of black holes and exotic compact objects on the brane
Sumanta Chakraborty, Sayak Datta, Subhadip Sau
During the early phase of in-spiral of a binary system, the tidal heating of a compact object due to its companion plays a significant role in the determination of the orbital evol…
No-boundary Wave Function, Wheeler-DeWitt Equation and Path Integral Analysis of the Bouncing `Quantum' Cosmology
Karthik Rajeev, Vikramaditya Mondal, Sumanta Chakraborty
Bouncing models are alternatives to inflationary cosmology that replace the initial Big-Bang singularity by a `bouncing' phase. A deeper understanding of the initial conditions of…