Charged perfect fluid disks as sources of Taub-NUT-type spacetimes

Abstract

The interpretation of a family of electrovacuum stationary Taub-NUT-type fields in terms of finite charged perfect fluid disks is presented. The interpretation is mades by means of an "inverse problem" approach used to obtain disk sources of known solutions of the Einstein or Einstein-Maxwell equations. The diagonalization of the energy-momentum tensor of the disks is facilitated in this case by the fact that it can be written as an upper right triangular matrix. We find that the inclusion of electromagnetic fields changes significatively the different material properties of the disks and so we can obtain, for some values of the parameters, finite charged perfect fluid disks that are in agreement with all the energy conditions.

6 pages, Revtex4

References in corpus (1)

• Electrovacuum Static Counterrotating Relativistic Dust Disks

Cited by in corpus (5)

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• Charged Annular Disks and Reissner-Nordström Type Black Holes from Extremal Dust
• Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk