185 citations · 4.3k across the 135 of their papers we have counts for
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Stability analysis of circular orbits around a charged BTZ black hole spacetime in a nonlinear electrodynamics model via Lyapunov exponents
Shobhit Giri, Hemwati Nandan, Lokesh Kumar Joshi +1
We investigate the existence and stability of both the timelike and null circular orbits for a (2+1) dimensional charged BTZ black hole in Einstein-nonlinear Maxwell gravity with a…
A semi-tetrad decomposition of the Kerr spacetime
Chevarra Hansraj, Rituparno Goswami, Sunil D. Maharaj
In this paper we perform a semi-tetrad decomposition of the Kerr spacetime. We apply the 1+1+2 covariant method to the Kerr spacetime in order to describe its geometry outside the…
Rotating Black Holes in Horndeski Gravity: Thermodynamic and Gravitational Lensing
Rahul Kumar Walia, Sunil D. Maharaj, Sushant G. Ghosh
The lack of rotating black holes, typically found in nature, hinders testing modified gravity from astrophysical observations. We present the axially symmetric counterpart of an ex…
Nonsingular black hole chemistry
Arun Kumar, Sushant G. Ghosh, Sunil D. Maharaj
We study the nonsingular black hole in Anti de-Sitter background taking the negative cosmological constant as the pressure of the system. We investigate the horizon structure, and…
Necessity of spacetime shear for cosmological gravitational waves
Roger M. Mayala, Rituparno Goswami, Sunil D. Maharaj
We show that a general but shear-free perturbation of homogeneous and isotropic universes are necessarily silent, without any gravitational waves. We prove this in two steps. First…
On homothetic Killing vectors in stationary axisymmetric vacuum spacetimes
Abbas M. Sherif, Peter K. S. Dunsby, Rituparno Goswami +1
In this paper we consider homothetic Killing vectors in the class of stationary axisymmetric vacuum (SAV) spacetimes, where the components of the vectors are functions of the time…