Equilibrium configurations from gravitational collapse

Pankaj S. Joshi, Daniele Malafarina, Ramesh Narayan

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)

Abstract

We develop here a new procedure within Einsteins theory of gravity to generate equilibrium configurations that result as the final state of gravitational collapse from regular initial conditions. As a simplification, we assume that the collapsing fluid is supported only by tangential pressure. We show that the equilibrium geometries generated by this method form a subset of static solutions to the Einstein equations, and that they can either be regular or develop a naked singularity at the center. When a singularity is present, there are key differences in the properties of stable circular orbits relative to those around a Schwarzschild black hole with the same mass. Therefore, if an accretion disk is present around such a naked singularity it could be observationally distinguished from a disk around a black hole.

Original languageEnglish
Article number235018
JournalClassical and Quantum Gravity
Volume28
Issue number23
DOIs
Publication statusPublished - Dec 7 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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