31 citations · 31 across the 3 of their papers we have counts for
16 papers · 1 filter
A bonafide model of structure formation from gravitational collapse
Koushiki, Dipanjan Dey, Pankaj S. Joshi
This paper explores the cosmological implications of a scalar field with a specific potential, crucial for achieving the final equilibrium state of gravitational collapse. We consi…
Future-null singularity due to gravitational collapse
Ashok B. Joshi, Karim Mosani, Pankaj S. Joshi
In the case of unhindered gravitational collapse of matter cloud governed by the Lemaitre-Tolman-Bondi (LTB) spacetime, the end-state singularity is either locally visible, globall…
Gravitational collapse in asymptotically Anti-de Sitter/de Sitter backgrounds
T. Arun Madhav, Rituparno Goswami, Pankaj S. Joshi
We study here the gravitational collapse of a matter cloud with a non-vanishing tangential pressure in the presence of a non-zero cosmological term. Conditions for bounce and singu…
Appearance of the central singularity in spherical collapse
S. S. Deshingkar, P. S. Joshi, I. H. Dwivedi
We analyze here the structure of non-radial nonspacelike geodesics terminating in the past at a naked singularity formed as the end state of inhomogeneous dust collapse. The spectr…
Gravitational Collapse in Constant Potential Bath
S. Jhingan, N. Dadhich, P. S. Joshi
We analyse here the gravitational collapse of directed null radiation in a background with a constant potential such as one produced by a star system like galaxy in which the colla…
A Tolman-Bondi-Lemaitre Cell-Model for the Universe and Gravitational Collapse
A. Chamorro, S. S. Deshingkar, I. H. Dwivedi +1
A piecewise Tolman-Bondi-Lemaitre (TBL) cell-model for the universe incorporating local collapsing and expanding inhomogeneities is presented here. The cell-model is made up of TBL…