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7 papers · 2 filters
Null Geodesic Expansion in Spherical Gravitational Collapse
T. P. Singh
We derive an expression for the expansion of outgoing null geodesics in spherical dust collapse and compute the limiting value of the expansion in the approach to singularity forma…
Field of a Radiation Distributuion
I. H. Dwivedi
General relativistic spherically symmetric matter field with a vanishing stress energy scalar is analyzed. Procedure for generating exact solutions of the field equations for such…
Are naked singularites forbidden by the second law of thermodynamics?
Sukratu Barve, T. P. Singh
By now, many examples of naked singularities in classical general relativity are known. It may however be that a physical principle over and above the general theory prevents the o…
Admissibility of initial data in spherical collapse
H. M. Antia
Gravitational collapse of a spherically symmetric cloud has been extensively studied to investigate the nature of resulting singularity. However, there has been considerable debate…
Naked singularities and admissibility of initial conditions
H. M. Antia
Gravitational collapse of a spherically symmetric cloud has been extensively studied to investigate the nature of resulting singularity. However, there has been considerable debate…
Janis-Newman-Winicour and Wyman solutions are the same
K. S. Virbhadra
We show that the well-known most general static and spherically symmetric exact solution to the Einstein-massless scalar equations given by Wyman is the same as one found by Janis,…
Cosmic censorship and spherical gravitational collapse with tangential pressure
T. P. Singh, Louis Witten
We study the spherical gravitational collapse of a compact object under the approximation that the radial pressure is identically zero, and the tangential pressure is related to th…