Gravitational collapse of spherically symmetric plasmas in Einstein-Maxwell spacetimes

Details Gravitational collapse of spherically symmetric plasmas in Einstein-Maxwell spacetimes Gravitational collapse of spherically symmetric plasmas in Einstein-Maxwell spacetimes

2007-04-26

arxiv.org/abs/0704.3634v2

Phys.Rev.D75:104010,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.75.104010

We utilize a recent formulation of a spherically symmetric spacetime endowed with a general decomposition of the energy momentum tensor [Phys. Rev. D, 75, 024031 (2007)] to derive equations governing spherically symmetric distributions of electromagnetic matter. We show the system reduces to the Reissner-Nordstrom spacetime in general, spherically symmetric coordinates in the vacuum limit. Furthermore, we show reduction to the charged Vaidya spacetime in non-null coordinates when certain equations of states are chosen. A model of gravitational collapse is discussed whereby a charged fluid resides within a boundary of finite radial extent on the initial hypersurface, and is allowed to radiate charged particles. Our formalism allows for the discussion of all regions in this model without the need for complicated matching schemes at the interfaces between successive regions. As further examples we consider the collapse of a thin shell of charged matter onto a Reissner-Nordstrom black hole. Finally, we reduce the entire system of equations to the static case such that we have the equations for hydrostatic equilibrium of a charged fluid.

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