Electrically charged gravastar configurations

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dc.creatorHorvat, Dubravko
dc.creatorIlijic, Sasa
dc.creatorMarunovic, Anja
dc.date2008-07-13
dc.date2008-12-02
dc.date.accessioned2026-07-07T12:30:12Z
dc.date.available2026-07-07T12:30:12Z
dc.descriptionThe notion of a compact object immune to the horizon problem and comprising an anisotropic inhomogeneous fluid with a specific radial pressure behavior, i.e. the gravastar, is extended by introducing an electrically charged component. Einstein-Maxwell field equations are solved in the asymptotically de Sitter interior where a source of the electric field is coupled to the fluid energy density. Two different solutions which satisfy the dominant energy condition are given: one is the delta-shell model for which the analysis is carried out within Israel's thin shell formalism, the other approach - the continuous profile model - is solved numerically and the interior solutions have been (smoothly) joined with the Reissner-Nordstrom exterior. The effect of electric charge is considered, and the equation of state, the speed of sound and the surface redshift are calculated for both models.
dc.descriptionLaTeX, 14 pages, 3 figs, changes wrt v1: discussion of emergent equation of state included and references updated (to appear in CQG)
dc.identifierhttps://arxiv.org/abs/0807.2051
dc.identifierhttp://arxiv.org/abs/0807.2051
dc.identifierClass.Quant.Grav.26:025003,2009
dc.identifierdoi:10.1088/0264-9381/26/2/025003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216062
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleElectrically charged gravastar configurations
dc.typetext

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