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arXiv 2102.05443gr-qc
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具有精华的荷电薄壳重力星的稳定性

Stability of Charged Thin-Shell Gravastars with Quintessence

M. Sharif, Faisal Javed

摘要:

在带电Kiselev黑洞作为外流形的背景下,给出了引力真空星的一个新的解。我们探讨了薄壳引力星的物理特性和稳定性与径向扰动。薄壳处的物质薄层对发展结构的稳定形态有很大影响。我们假设了三种不同的物质分布选择,如正压、广义Chaubergin气体和广义类幻影状态方程。后两个模型依赖于壳的半径,也称为可变状态方程。对于正压模式,薄壳重力星的结构大多是不稳定的,而对于这种具有非常显著的质量参数的物质分布类型,它表现出稳定的结构。由此产生的引力星结构表明,稳定的行为,广义Chaubergin气体,但不稳定的广义phantomlike模型。壳层内的固有长度、熵和能量与壳层厚度呈线性关系。

英文摘要:

This paper develops a new solution of gravitational vacuum star in the background of charged Kiselev black holes as an exterior manifold. We explore physical features and stability of thin-shell gravastars with radial perturbation. The matter thin layer located at thin-shell greatly affects stable configuration of the developed structure. We assume three different choices of matter distribution such as barotropic, generalized Chaplygin gas and generalized phantomlike equation of state. The last two models depend on the shell radius, also known as variable equation of state. For barotropic model, the structure of thin-shell gravastar is mostly unstable while it shows stable configuration for such type of matter distribution with extraordinary quintessence parameter. The resulting gravastar structure indicates stable behavior for generalized Chaplygin gas but unstable for generalized phantomlike model. It is also found that proper length, entropy and energy within the shell show linear relation with thickness of the shell.

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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