Finite Axisymmetric Charged Dust Disks Sources for Conformastatic Spacetimes

Details Finite Axisymmetric Charged Dust Disks Sources for Conformastatic Spacetimes Finite Axisymmetric Charged Dust Disks Sources for Conformastatic Spacetimes

2009-06-04

arxiv.org/abs/0906.0978v1

AIP Conf.Proc.1122:280-283,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Physics and Mathematics of Gravitation: Proceedings of the Spanish Relativity Meeting 2008

Scientific paper

10.1063/1.3141293

An infinite family of finite axisymmetric charged dust disks is presented. The disks are obtained by solving the Einstein-Maxwell equations for conformastatic spacetimes by assuming a functional dependency between the time-like component of the electromagnetic potential and the metric potential in terms of a solution of the Laplace equation. We give solutions to the Einstein-Maxwell equations with disk sources of finite extension in which the charge density is proportional to the energy surface density. We apply the well-know "inverse" approach to the gravitational potential representing finite thin disks given by Gonzalez and Reina to generate conformastatic charged dust thin discs. Exact examples of conformastatic metrics with disk sources are worked out in full.

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