Rotating Relativistic Thin Disks as Sources of the Taub-NUT Solution

Details Rotating Relativistic Thin Disks as Sources of the Taub-NUT Solution Rotating Relativistic Thin Disks as Sources of the Taub-NUT Solution

2002-12-11

arxiv.org/abs/gr-qc/0212052v2

Rev.Integr.TemasMat.20:13-17,2002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, Available at http://matematicas.uis.edu.co/integracion/

Scientific paper

Rotating disks with nonzero radial pressure and finite radius are studied. The models are based in the Taub-NUT metric and constructed using the well-known ``displace, cut and reflect'' method. We find that the disks are made of perfect fluids with constant energy density and pressure. The energy density is negative, but the effective Newotnian density is possitive as the strong energy condition requires. We also find that the disks are not stable under radial perturbations and that there are regions of the disks where the particles move with superluminal velocities.

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