Electrically charged gravastar configurations (CROSBI ID 145951)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Horvat, Dubravko ; Ilijić, Saša ; Marunović Anja
engleski
Electrically charged gravastar configurations
The 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.
Einstein-Maxwell; gravastar
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Podaci o izdanju
26 (2)
2009.
025003-1-025003-12
objavljeno
0264-9381
10.1088/0264-9381/26/2/025003