61 citations · 149 across the 8 of their papers we have counts for
8 papers
de Sitter corrections to supertranslation Ward identity and soft graviton theorem
Pratik Chattopadhyay, Divyesh N. Solanki
We study the tree-level scattering of massless scalars followed by an emission of a soft graviton in the small compact region inside the static patch in de Sitter space. We derive…
Perturbative soft graviton theorems in de Sitter spacetime
Divyesh N. Solanki, Pratik Chattopadhyay, Srijit Bhattacharjee
We consider soft graviton scattering for a theory where Einstein's gravity is minimally coupled to a scalar field in the presence of a cosmological constant, i.e. in a background d…
Supertranslations at Spatial and Timelike Infinities in the First-Order Formalism
Divyesh N. Solanki, Srijit Bhattacharjee
We study supertranslations at spatial and future timelike infinity in the first-order formalism. We relax the Ashtekar-Engle-Sloan boundary conditions to allow supertranslations at…
Soft Theorems and Memory Effects at Finite Temperatures
Divyesh N. Solanki, Srijit Bhattacharjee
We study the soft theorems for photons and gravitons at finite temperatures using the thermofield dynamics approach. The soft factors lose universality at finite temperatures as th…
Shadows and precession of orbits in rotating Janis-Newman-Winicour spacetime
Divyesh N. Solanki, Parth Bambhaniya, Dipanjan Dey +2
In this paper, we construct the rotating Janis-Newman-Winicour (JNW) naked singularity spacetime using Newman-Janis Algorithm (NJA). We analyse NJA with and without complexificatio…
Post-Newtonian properties of EMRI with Power Law Potential
Chinmay N. Gandevikar, Divyesh N. Solanki, Dipanjan Dey
There are many astrophysical scenarios where extreme mass ratio inspiral (EMRI) binaries can be surrounded by matter distribution. The distribution of mass can affect the dynamical…
Shadows and negative precession in non-Kerr spacetime
Parth Bambhaniya, Dipanjan Dey, Ashok B. Joshi +3
It is now known that the shadow is not only the property of a black hole, it can also be cast by other compact objects like naked singularities. However, there exist some novel fea…
Precession of timelike bound orbits in Kerr spacetime
Parth Bambhaniya, Divyesh N. Solanki, Dipanjan Dey +3
Astrometric observations of S-stars provide a unique opportunity to probe the nature of Sagittarius-A* (Sgr-A*). In view of this, it has become important to understand the nature a…