Nature of singularities in gravitational collapse

TL;DR

This paper reviews the cosmic censorship hypothesis, presenting evidence for and against it, and discusses potential observational tests to verify its validity in gravitational collapse scenarios.

Contribution

It provides a comprehensive analysis of cosmic censorship, highlighting special cases supporting or violating it, and proposes observational methods to test the hypothesis.

Findings

Cosmic censorship holds in certain special cases.

Existence of solutions violating cosmic censorship.

Proposed observational tests for the hypothesis.

Abstract

We discuss several aspects of cosmic censorship hypothesis. There is evidence both in favor and against the hypothesis. On one hand one can prove that cosmic censorship holds in several special cases and on the other hand there is a number of special solutions of Einstein equations in which it is violated. One way to resolve cosmic censorship problem is to test it observationally. We point out to several possibilities of such tests using present and future instruments.