Stable gravastars with generalised exteriors

Details Stable gravastars with generalised exteriors Stable gravastars with generalised exteriors

2005-09-22

arxiv.org/abs/gr-qc/0509087v1

Class.Quant.Grav. 22 (2005) 4551-4562

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 11 figures, to appear in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/22/21/007

New spherically symmetric gravastar solutions, stable to radial perturbations, are found by utilising the construction of Visser and Wiltshire. The solutions possess an anti--de Sitter or de Sitter interior and a Schwarzschild--(anti)--de Sitter or Reissner--Nordstr\"{o}m exterior. We find a wide range of parameters which allow stable gravastar solutions, and present the different qualitative behaviours of the equation of state for these parameters.

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