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Backscattering: an overlooked effect of General Relativity?

Edward Malec·Niall O'Murchadha
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Abstract

The total flux of outgoing radiation in a strong gravitational field decreases due to backscattering if the sources are close to an apparent horizon. It can cause detectable changes in the shape of signals. Backscattering could well be of relevance to astrophysics and would constitute a new test of the validity of general relativity. An explicit bound for this effect is derived for scalar fields.

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Edward Malec, Niall O'Murchadha. 1997-11-28. Backscattering: an overlooked effect of General Relativity?. https://arxiv.org/abs/gr-qc/9711087

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