Method reveals null singularities through spacelike surfaces and harmonic time slicing in simulations, suggesting new insights into black hole structures.
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
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David Garfinkle (2025) studied this question.
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