Accreting Primordial Black Holes as Dark Matter Constituents

T. Kenneth Fowler; Richard Anantua

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arXiv · 2303.09341

Accreting Primordial Black Holes as Dark Matter Constituents

T. Kenneth Fowler·Richard Anantua

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Abstract

We show how magnetic accretion of positronium (electron-positron) plasma by primordial black holes might significantly contribute to the mass of dark matter in the present Universe. Assuming that background gamma radiation is primordial black hole Hawking radiation rules out Bondi accretion, while magnetic accretion known from studies of active galactic nuclei could explain the abundance of dark matter. Various accretion scenarios are discussed.

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T. Kenneth Fowler, Richard Anantua. 2023-03-16. Accreting Primordial Black Holes as Dark Matter Constituents. https://arxiv.org/abs/2303.09341

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