Randomized trial compares linear predictions of radiation in stellar collapse with numerical integration outcomes, indicating strong correlations.
We compare the predictions of linearized theory for the radiation produced in the collapse of a spherically symmetric scalar field with a full numerical integration of the Einstein equations. We find power-law tails and quasinormal ringing remarkably similar to predictions of linearized theory even in cases where nonlinearities are crucial. We also show that power-law tails develop even when the collapsing scalar field fails to produce a black hole.
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Gundlach et al. (1994) studied this question.
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