Initial data and the end state of spherically symmetric gravitational collapse

Details Initial data and the end state of spherically symmetric gravitational collapse Initial data and the end state of spherically symmetric gravitational collapse

1998-04-28

arxiv.org/abs/gr-qc/9804075v1

Class.Quant.Grav. 16 (1999) 41-59

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Ordinary Tex file, 31 pages no figures

Scientific paper

10.1088/0264-9381/16/1/003

Generalizing earlier results on the initial data and the final fate of dust collapse, we study here the relevance of the initial state of a spherically symmetric matter cloud towards determining its end state in the course of a continuing gravitational collapse. It is shown that given an arbitrary regular distribution of matter at the initial epoch, there always exists an evolution from this initial data which would result either in a black hole or a naked singularity depending on the allowed choice of free functions available in the solution. It follows that given any initial density and pressure profiles for the cloud, there is a non-zero measure set of configurations leading either to black holes or naked singularities, subject to the usual energy conditions ensuring the positivity of energy density. We also characterize here wide new families of black hole solutions resulting from spherically symmetric collapse without requiring the cosmic censorship assumption.

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