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arXiv 2403.01094gr-qchep-th
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$f(\mathcal{Q})$引力中带电引力星模型研究

Study of charged gravastar model in $f(\mathcal{Q})$ gravity

Debasmita Mohanty, Sayantan Ghosh, P. K. Sahoo

AI总结:

本文在$f(\mathcal{Q})$修正引力框架下解析研究带电引力星,给出其能量密度、熵、EoS、薄壳势及光线偏转,并讨论未来射电望远镜通过阴影区分引力星与黑洞。

摘要:

近年来,引力星已成为黑洞极具吸引力的替代物,因为它同样不存在奇点问题,并且建立在可靠的物理基础之上。修正的对称 teleparallel 等效引力近年来在宇宙学以及黑洞、虫洞等天体物理对象中也取得了不少成功。本文在$f(\mathcal{Q})$表述中考虑带电引力星,并对其进行完全解析求解,得到了引力星的能量密度、熵和EoS等多种物理特征。作者利用Israel连接条件,对引力星周围薄壳的势作出了一些唯象预测。文中还研究了引力星导致的角度偏转。最后,作者总结指出未来射电望远镜如何探测引力星阴影,以及如何将其与黑洞事件视界区分开来。

英文摘要:

In recent days gravastar has been a very lucrative alternative to black holes, as it does not suffer from the singularity problem as well and it is based on sound physical grounds. Modified Symmetric teleparallel equivalent of gravity also has seen quite a few successes in recent years both in cosmology as well as in astrophysical objects like black holes and wormholes. In this paper, we have considered the charged gravastar in $f(\mathcal{Q})$ formulation and have solved it fully analytically and found various physical characteristics like energy density, entropy and EoS for the gravastar. We have used the Israel junction condition to make some phenomenological predictions regarding the potential of the thin shell around the gravastar. We have also studied the deflection of the angle caused by the gravastar. Finally, we conclude by noting how future radio telescopes could detect the gravastar shadow and how can one distinguish it from the black hole event horizon.

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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