论文标题
正规化稳定的克尔黑洞：宇宙审查制度，阴影和准正常模式
Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes
论文作者
论文摘要
一般相对论中的黑洞溶液伴随着奇异性和质量通胀不稳定性等病理，被认为可以通过尚未建立的重力理论治愈。没有这样一致的描述，可以模拟绕过上述问题的理论反应现象学黑洞。这些所谓的常规黑洞在文献中使用参数化的修改在文献中进行了广泛研究，该修饰是一般相对论的黑洞溶液。但是，由于有几种模拟此类黑洞的方法，因此从理论和观察角度研究这些解决方案的一致性和生存力很重要。在这项工作中，我们考虑了一个最近提出的正则化稳定旋转黑洞的模型，除了Kerr溶液的质量和自旋外，还具有两个额外的参数。我们首先在标量扰动下计算其准正常模式，并研究这些其他参数对黑洞稳定性的影响。在第二部分中，我们研究了这些正规化黑洞的阴影结构，并在参数空间上获得了严格的界限，这需要与$ M87^*$和$ sgr \ $ sgr \ a^*$ shadows的事件范围望远镜观测一致。
Black hole solutions in general relativity come with pathologies such as singularity and mass inflation instability, which are believed to be cured by a yet-to-be-found quantum theory of gravity. Without such consistent description, one may model theory-agnostic phenomenological black holes that bypass the aforesaid issues. These so-called regular black holes are extensively studied in the literature using parameterized modifications over the black hole solutions of general relativity. However, since there exist several ways to model such black holes, it is important to study the consistency and viability of these solutions from both theoretical and observational perspectives. In this work, we consider a recently proposed model of regularized stable rotating black holes having two extra parameters in addition to the mass and spin of a Kerr solution. We start by computing their quasi-normal modes under scalar perturbation and investigate the impact of those additional parameters on black hole stability. In the second part, we study the shadow structures of these regularized black holes and obtain stringent bounds on the parameter space requiring consistency with Event Horizon Telescope observations of $M87^*$ and $Sgr\, A^*$ shadows.
