Anomalous Ionization in the Central Molecular Zone by sub-GeV Dark Matter
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866913741547765760 |
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| author | Luque, Pedro De la Torre Balaji, Shyam Silk, Joseph |
| author_facet | Luque, Pedro De la Torre Balaji, Shyam Silk, Joseph |
| contents | We demonstrate that the anomalous ionization rate observed in the Central Molecular Zone can be attributed to MeV dark matter annihilations into $e^+e^-$ pairs for galactic dark matter profiles with slopes $γ>1$. The low annihilation cross-sections required avoid cosmological constraints and imply no detectable inverse Compton, bremsstrahlung or synchrotron emissions in radio, X and gamma rays. The possible connection to the source of the unexplained 511 keV line emission in the Galactic Center suggests that both observations could be correlated and have a common origin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_07515 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anomalous Ionization in the Central Molecular Zone by sub-GeV Dark Matter Luque, Pedro De la Torre Balaji, Shyam Silk, Joseph High Energy Physics - Phenomenology High Energy Astrophysical Phenomena We demonstrate that the anomalous ionization rate observed in the Central Molecular Zone can be attributed to MeV dark matter annihilations into $e^+e^-$ pairs for galactic dark matter profiles with slopes $γ>1$. The low annihilation cross-sections required avoid cosmological constraints and imply no detectable inverse Compton, bremsstrahlung or synchrotron emissions in radio, X and gamma rays. The possible connection to the source of the unexplained 511 keV line emission in the Galactic Center suggests that both observations could be correlated and have a common origin. |
| title | Anomalous Ionization in the Central Molecular Zone by sub-GeV Dark Matter |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2409.07515 |