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Title of Journal: Astrophys Space Sci

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Abbravation: Astrophysics and Space Science

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Springer Netherlands

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DOI

10.1007/bf02845199

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1572-946X

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Gravitational collapse of a circularly symmetric s

Authors: Ranjan Sharma Shyam Das Farook Rahaman Gopal Chandra Shit
Publish Date: 2015/09/01
Volume: 359, Issue: 1, Pages: 40-
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Abstract

We investigate the collapse of a circularly symmetric star with outgoing radiation in 2+1dimensional antide Sitter spacetime The exterior spacetime of the collapsing star is assumed to be described by the nonstatic generalization of the Bañados Teitelboim and Zanelli Phys Rev Lett 691849 1992 metric Making use of the junction conditions joining smoothly the interior and the exterior spacetimes across the boundary we analyze the impacts of various factors on the evolution of the star which begins its collapse from an initial static configuration In particular depending on initial conditions two possible outcomes of the collapse process are shown i formation of a BTZ black hole and ii evaporation of all massenergy even before the singularity is reached

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