Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes

Understand

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.