TY - JOUR
T1 - Equilibrium configurations from gravitational collapse
AU - Joshi, Pankaj S.
AU - Malafarina, Daniele
AU - Narayan, Ramesh
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/12/7
Y1 - 2011/12/7
N2 - 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.
AB - 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.
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U2 - 10.1088/0264-9381/28/23/235018
DO - 10.1088/0264-9381/28/23/235018
M3 - Article
AN - SCOPUS:81255200248
VL - 28
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
SN - 0264-9381
IS - 23
M1 - 235018
ER -