Developments in General Relativity: Black Hole Singularity and Beyond

TL;DR

This paper reviews recent advances in understanding the internal structure of rotating black holes, exploring the nature of singularities and the possibility of observers crossing them without destruction.

Contribution

It presents new insights into the internal structure of realistic rotating black holes and discusses the potential for crossing singularities safely.

Findings

Recent progress in modeling black hole interiors

Possibility of crossing the singularity without being crushed

Insights into the nature of black hole singularities

Abstract

At the 20-th Texas Symposium on Relativistic Astrophysics there was a plenary talk devoted to the recent developments in classical Relativity. In that talk the problems of gravitational collapse, collisions of black holes, and of black holes as celestial bodies were discussed. But probably the problems of the internal structure of black holes are a real great challenge. In my talk I want to outline the recent achievements in our understanding of the nature of the singularity (and beyond!) inside a realistic rotating black hole. This presentation also addresses the following questions: Can we see what happens inside a black hole? Can a falling observer cross the singularity without being crushed? An answer to these questions is probably "yes".