Cosmic Censorship: Formation of a Shielding Horizon Around a Fragile Horizon
Shahar Hod

TL;DR
This paper demonstrates that attempts to overcharge a black hole in a thought experiment are thwarted by the formation of a new horizon, supporting the weak cosmic censorship conjecture.
Contribution
It proves that a shielding horizon forms before a charged shell can overcharge a black hole, thus safeguarding the conjecture against this class of gedanken experiments.
Findings
A new horizon forms before the shell crosses the original horizon.
The formation of the horizon prevents exposure of a naked singularity.
Supports the validity of the weak cosmic censorship conjecture.
Abstract
The weak cosmic censorship conjecture asserts that spacetime singularities that arise in gravitational collapse are always hidden inside of black holes, invisible to distant observers. This conjecture, put forward by Penrose more than four decades ago, is widely believed to be one of the basic principles of nature. However, a complete proof of this hypothesis is still lacking and the validity of the conjecture has therefore remained one of the most important open questions in general relativity. In this study we analyze a gedanken experiment which is designed to challenge cosmic censorship by trying to overcharge a Reissner-Nordstr\"om black hole: a charged shell is lowered {\it adiabatically} into the charged black hole. The mass-energy delivered to the black hole can be red-shifted by letting the dropping point of the shell approach the black-hole horizon. On the other hand, the…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
