The Weak Cosmic Censorship Conjecture in Hairy Kerr Black Holes

Abstract

The Weak Cosmic Censorship Conjecture, since its proposal, has always been a controversial hypothesis, but its significance in astrophysics is undeniable. For a regular black hole, its center does not contain a singularity, and the destruction of the horizon of such black holes is not protected by the Weak Cosmic Censorship Conjecture. Therefore, we employ Gedanken experiments to study the hairy Kerr black holes, which are promising candidates to serve as "simulators" of astrophysical black holes. By investigating these black holes through testing particles and scalar fields carrying large angular momentum, we explore whether these black holes can achieve overspinning. Our results suggest that the overspinning behavior of these hairy Kerr black holes in extremal or near-extremal conditions strongly depends on the hairy parameters ($\alpha ,l_0$). This not only potentially offers us an opportunity to explore the interior structure of black holes, but may also provide clues for constraining the hairy parameters. This phenomenon might reveal the connection between the no-hair theorem of black holes and the weak cosmic censorship conjecture, bringing new perspectives to our understanding of these theories.

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• Gravitational decoupling for axially symmetric systems and rotating black holes
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• Examining the weak cosmic censorship conjecture by gedanken experiments for Kerr-Sen black holes
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• Extending the weak cosmic censorship conjecture to the charged Buchdahl star by employing the gedanken experiments
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Cited by in corpus (4)

• The Lensing Effect of Quantum-Corrected Black Hole and Parameter Constraints from EHT Observations
• Testing black holes in a perfect fluid dark matter environment using quasinormal modes
• Can the induced increase in the angular velocity prevent the overspinning of BTZ black holes?
• Violation of cosmic censorship in Einstein-Maxwell-Scalar models with fractional coupling