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Masking of black holes means that, for given total mass and Hawking temperatures, these data may correspond to either "pure" black hole or a black hole of a lesser mass surrounded by a massive shell. It is shown that there is one-to one correspondence between this phenomenon and thermodynamics of a black hole in a finite size cavity: masking of black holes is possible if and only if there exists at least one locally unstable black hole solution in the corresponding canonical ensemble.Comment: 7 pages. To appear in Gravitation and Cosmolog

Topics:
General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory

Year: 2011

DOI identifier: 10.1134/S020228931103011X

OAI identifier:
oai:arXiv.org:1102.4056

Provided by:
arXiv.org e-Print Archive

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