标题： 带电引力星模型在$f(\mathcal{Q})$引力中的研究 显示英文标题

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

摘要： 近年来，gravastar 成为黑洞的一个非常有前景的替代方案，因为它不面临奇点问题，并且基于坚实的物理基础。 引力的修改对称平行等效理论近年来在宇宙学以及黑洞和虫洞等天体物理对象方面也取得了相当多的成功。 在本文中，我们考虑了$f(\mathcal{Q})$形式下的带电 gravastar，并完全解析地求解了它，得出了 gravastar 的各种物理特性，如能量密度、熵和状态方程。 我们使用 Israel 界面条件对 gravastar 周围薄壳的潜力做出了一些现象学预测。 我们还研究了由 gravastar 引起的角度偏转。 最后，我们得出结论，指出未来的射电望远镜如何检测 gravastar 的阴影，以及如何将其与黑洞事件视界区分开来。 显示英文摘要

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.