Towards a spacelike characterization of the null singularity inside a black hole

Abstract

We propose a method for recognizing null singularities in a computer simulation that uses a foliation by spacelike surfaces. The method involves harmonic time slicing as well as rescaled tetrad variables. As a ``proof of concept'' we show that the method works in Reissner-Nordstrom spacetime.

arXiv commentDiscussion expanded. Examples of BKL behavior added in an appendix