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arXiv 0807.2051gr-qc
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荷电引力星组态

Electrically charged gravastar configurations

Dubravko Horvat, Sasa Ilijic, Anja Marunovic

摘要:

一个紧凑的对象免疫的地平线问题,并包括一个各向异性的非均匀流体与特定的径向压力行为,即重力场的概念,是通过引入一个带电的组件扩展。在渐近de Sitter内部求解Einstein-Maxwell场方程,其中电场的源耦合到流体能量密度。给出了两种不同的解决方案,满足主导能量条件:一个是三角形壳模型的分析是在以色列的薄壳形式主义,另一种方法-连续剖面模型-数值求解和内部解决方案已(顺利)加入与Reissner-Nordstrom外部。考虑了电荷的影响,计算了两种模型的物态方程、声速和表面红移。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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