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arXiv · 1106.5438

Equilibrium configurations from gravitational collapse

Pankaj S. Joshi·Daniele Malafarina·Ramesh Narayan
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Abstract

We develop here a new procedure within Einstein's 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.

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Pankaj S. Joshi, Daniele Malafarina, Ramesh Narayan. 2011-11-18. Equilibrium configurations from gravitational collapse. https://doi.org/10.1088/0264-9381%2F28%2F23%2F235018

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