Generic thin-shell gravastars

We construct generic spherically symmetric thin-shell gravastars by using the cut-and-paste procedure. We take considerable effort to make the analysis as general and unified as practicable; investigating both the internal physics of the transition layer and its interaction with "external force...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2012-03, Vol.2012 (3), p.i-29
Main Authors: Martin-Moruno, Prado, Garcia, Nadiezhda Montelongo, Lobo, Francisco SN, Visser, Matt
Format: Article
Language:English
Subjects:
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BLACK HOLES
Construction
COSMOLOGY
DENSITY
Dynamics
LAYERS
PROBES
SPACE-TIME
SPHERICAL CONFIGURATION
STABILITY
STARS
SURFACE ENERGY
SURFACE TENSION
SYMMETRY
Transition layers
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Description
Summary:We construct generic spherically symmetric thin-shell gravastars by using the cut-and-paste procedure. We take considerable effort to make the analysis as general and unified as practicable; investigating both the internal physics of the transition layer and its interaction with "external forces" arising due to interactions between the transition layer and the bulk spacetime. Furthermore, we discuss both the dynamic and static situations. In particular, we consider "bounded excursion" dynamical configurations, and probe the stability of static configurations. For gravastars there is always a particularly compelling configuration in which the surface energy density is zero, while surface tension is nonzero.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2012/03/034