http://arxiv.org/abs/2303.09341
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.
T. Fowler and R. Anantua
Fri, 17 Mar 23
42/67
Comments: 6 Pages
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