190 citations · 2.2k across the 86 of their papers we have counts for
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Constructing black hole entropy from gravitational collapse
Giovanni Acquaviva, George F. R. Ellis, Rituparno Goswami +1
Based on a recent proposal for the gravitational entropy of free gravitational fields, we investigate the thermodynamic properties of black hole formation through gravitational col…
Global structure of Black Holes via dynamical system
Apratim Ganguly, Radouane Gannouji, Rituparno Goswami +1
We recast the system of Einstein field equations for Locally Rotationally Symmetric spacetimes into an autonomous system of covariantly defined geometrical variables. The analysis…
Collapsing spherical stars in f(R) gravity
Rituparno Goswami, Anne Marie Nzioki, Sunil. D. Maharaj +1
We perform a careful investigation of the problem of physically realistic gravitational collapse of massive stars in f(R)-gravity. We show that the extra matching conditions that a…
Vibrating Black Holes in f(R) gravity
Anne Marie Nzioki, Rituparno Goswami, Peter K. S. Dunsby
We consider general perturbations of a Schwarzschild black holes in the context of f(R) gravity. A reduced set of frame independent master variables are determined, which obey two…
Gravitational collapse of generalised Vaidya spacetime
Maombi D. Mkenyeleye, Rituparno Goswami, Sunil D. Maharaj
We study the gravitational collapse of a generalised Vaidya spacetime in the context of the Cosmic Censorship hypothesis. We develop a general mathematical framework to study the c…
Astrophysical Black Hole horizons in a cosmological context: Nature and possible consequences on Hawking Radiation
George F R Ellis, Rituparno Goswami, Aymen I. M. Hamid +1
This paper considers the nature of apparent horizons for astrophysical black hole situated in a realistic cosmological context. Using semi-tetrad covariant methods we study the loc…