Spherically Symmetric Gravitational Collapse of Perfect Fluids

Details Spherically Symmetric Gravitational Collapse of Perfect Fluids Spherically Symmetric Gravitational Collapse of Perfect Fluids

2006-10-31

arxiv.org/abs/gr-qc/0611002v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, To appear in the proceedings of the eleventh Marcel Grossmann meeting on general relativity (MGXI), 23-29 July, 2006,

Scientific paper

Formulating a perfect fluid filled spherically symmetric metric utilizing the 3+1 formalism for general relativity, we show that the metric coefficients are completely determined by the mass-energy distribution, and its time rate of change on an initial spacelike hypersurface. Rather than specifying Schwarzschild coordinates for the exterior of the collapsing region, we let the interior dictate the form of the solution in the exterior, and thus both regions are found to be written in one coordinate patch. This not only alleviates the need for complicated matching schemes at the interface, but also finds a new coordinate system for the Schwarzschild spacetime expressed in generalized Painleve-Gullstrand coordinates.

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