Accreting Primordial Black Holes as Dark Matter Constituents
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866911789364543488 |
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| author | Fowler, T. Kenneth Anantua, Richard |
| author_facet | Fowler, T. Kenneth Anantua, Richard |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_09341 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Accreting Primordial Black Holes as Dark Matter Constituents Fowler, T. Kenneth Anantua, Richard High Energy Astrophysical Phenomena 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. |
| title | Accreting Primordial Black Holes as Dark Matter Constituents |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2303.09341 |