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arXiv · 2301.13215

Quasi-extremal primordial black holes are a viable dark matter candidate

Jose A. de Freitas Pacheco·Elias Kiritsis·Matteo Lucca·Joseph Silk
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Abstract

Black hole evaporation is generally considered inevitable for low-mass black holes, yet there is no confirmation of this remarkable hypothesis. Here, we propose a phenomenological model that appeals to the possible survival of light quasi-extremal primordial black holes as a significant dark matter component and show that the related cosmological and astrophysical constraints disappear for reasonable degrees of quasi-extremality. The results obtained are general, conservative and should be taken as a proof of principle for future, model-specific analyses.

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Jose A. de Freitas Pacheco, Elias Kiritsis, Matteo Lucca, Joseph Silk. 2023-01-30. Quasi-extremal primordial black holes are a viable dark matter candidate. https://doi.org/10.1103/physrevd.107.123525

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