Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866911836722429952 |
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| author | Delos, M. Sten Korsmeier, Michael Widmark, Axel Blanco, Carlos Linden, Tim White, Simon D. M. |
| author_facet | Delos, M. Sten Korsmeier, Michael Widmark, Axel Blanco, Carlos Linden, Tim White, Simon D. M. |
| contents | Recent studies indicate that thermally produced dark matter will form highly concentrated, low-mass cusps in the early universe that often survive until the present. While these cusps contain a small fraction of the dark matter, their high density significantly increases the expected gamma-ray flux from dark matter annihilation, particularly in searches of large angular regions. We utilize 14 years of Fermi-LAT data to set strong constraints on dark matter annihilation through a detailed study of the isotropic gamma-ray background, excluding with 95% confidence dark matter annihilation to $b\bar{b}$ final states for dark matter masses below 120 GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_13023 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background Delos, M. Sten Korsmeier, Michael Widmark, Axel Blanco, Carlos Linden, Tim White, Simon D. M. High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology Recent studies indicate that thermally produced dark matter will form highly concentrated, low-mass cusps in the early universe that often survive until the present. While these cusps contain a small fraction of the dark matter, their high density significantly increases the expected gamma-ray flux from dark matter annihilation, particularly in searches of large angular regions. We utilize 14 years of Fermi-LAT data to set strong constraints on dark matter annihilation through a detailed study of the isotropic gamma-ray background, excluding with 95% confidence dark matter annihilation to $b\bar{b}$ final states for dark matter masses below 120 GeV. |
| title | Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background |
| topic | High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2307.13023 |