Gravitational collapse from smooth initial data with vanishing radial pressure

Details Gravitational collapse from smooth initial data with vanishing radial pressure Gravitational collapse from smooth initial data with vanishing radial pressure

2003-12-02

arxiv.org/abs/gr-qc/0312015v2

Class.Quant.Grav. 22 (2005) 271-282

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages,3 figures,revtex4,Revised Version

Scientific paper

10.1088/0264-9381/22/2/002

We study here the spherical gravitational collapse assuming initial data to be necessarily smooth, as motivated by the requirements based on physical reasonableness. A tangential pressure model is constructed and analyzed in order to understand the final fate of collapse explicitly in terms of the density and pressure parameters at the initial epoch from which the collapsedevelops. It is seen that both black holes and naked singularities are produced as collapse end states even when the initial data is smooth. We show that the outcome is decided entirely in terms of the initial data, as given by density, pressure and velocity profiles at the initial epoch, from which the collapse evolves.

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