paper

Evaporating black holes: constraints on anomalous emission mechanisms

arXiv:2107.14244 · doi:10.1103/PhysRevD.104.124024

Abstract

Hawking radiation of astrophysical black holes is minute and thought to be unobservable. However, different mechanisms could contribute to an anomalously high emission rate: extra dimensions, new "dark" families of bosons or fermions, or a lower fundamental Planck scale. Do black holes flood the Universe with gravitational waves via mass loss? Here, we show that the formation of black hole binaries and the absence of a stochastic background of gravitational waves can limit the emission rate to , seven orders of magnitude more stringent than bounds from resolvable inspiralling binaries.

5 pages, 2 figures, 1 table

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