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Stable gravastars with generalised exteriors

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arxiv gr-qc/0509087 v1 pith:5XKWS6DK submitted 2005-09-22 gr-qc

Benedict M.N. Carter This is my paper · ORCID
classification gr-qc
keywords sittersolutionsstablegravastarparametersallowantianti--de
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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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  1. Herrera Complexity and Shadows of Spherically Symmetric Compact Objects

    gr-qc 2025-01 conditional novelty 6.0 of 10

    The sign of the Herrera complexity factor at a light ring indicates whether that ring is a stable or unstable photon sphere, and zero-complexity compact objects cannot host external photon spheres.

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