Quasi-black holes: definition and general properties

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dc.creatorLemos, José P. S.
dc.creatorZaslavskii, Oleg B.
dc.date2007-07-07
dc.date2007-10-06
dc.date.accessioned2026-07-07T11:17:37Z
dc.date.available2026-07-07T11:17:37Z
dc.descriptionObjects that are on the verge of being extremal black holes but actually are distinct in many ways are called quasi-black holes. Quasi-black holes are defined here and treated in a unified way through the displaying of their properties. The main ones are (i) there are infinite redshift whole regions, (ii) the spacetimes exhibit degenerate, almost singular, features but their curvature invariants remain perfectly regular everywhere, (iii) in the limit under discussion, outer and inner regions become mutually impenetrable and disjoint, although, in contrast to the usual black holes, this separation is of a dynamical nature, rather than purely causal, (iv) for external far away observers the spacetime is virtually indistinguishable from that of extremal black holes. It is shown, in addition, that quasi-black holes must be extremal. Connections with black hole and wormhole physics are also drawn.
dc.description29 pages, minor changes
dc.identifierhttps://arxiv.org/abs/0707.1094
dc.identifierhttp://arxiv.org/abs/0707.1094
dc.identifierPhys.Rev.D76:084030,2007
dc.identifierdoi:10.1103/PhysRevD.76.084030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193066
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleQuasi-black holes: definition and general properties
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