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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2412.11966 |
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| _version_ | 1866909430641065984 |
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| author | He, Hao-Ning Kido, Eiji Duan, Kai-Kai Yang, Yang Higuchi, Ryo Fan, Yi-Zhong Wang, Tao Jiang, Lu-Yao Li, Rong-Lan Zhu, Ben-Yang Li, Xiang Xia, Zi-Qing Nagataki, Shigehiro Wei, Da-Ming Kusenko, Alexander |
| author_facet | He, Hao-Ning Kido, Eiji Duan, Kai-Kai Yang, Yang Higuchi, Ryo Fan, Yi-Zhong Wang, Tao Jiang, Lu-Yao Li, Rong-Lan Zhu, Ben-Yang Li, Xiang Xia, Zi-Qing Nagataki, Shigehiro Wei, Da-Ming Kusenko, Alexander |
| contents | Ultrahigh-energy cosmic rays (UHECRs) are the highest energy messenger from space, with energies exceeding 1 EeV. Although UHECRs were discovered over 60 years ago, their origin still remains a mystery. Pinpointing sources of UHECRs is crucial for understanding the extreme astrophysical processes that accelerate particles to such extraordinary energies. We searched for UHECR multiplets via analyzing 17 years of data with energies greater than 40 EeV from the Pierre Auger Observatory. A spatial association is found between a multiplet of $25.7^{+6.2}_{-7.0}$ cosmic rays and the Sombrero galaxy with a local (global) significance of $4.5~σ~(3.3~σ)$. The Sombrero galaxy hosts a supermassive central black hole with a mass of $\sim1\times 10^9 M_{\odot}$ and exhibits large-scale radio lobes and jets. Our finding provides critical evidence on active supermassive black holes as the source of the highest-energy cosmic rays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_11966 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evidence for the Sombrero Galaxy as an Accelerator of the Highest-Energy Cosmic Rays He, Hao-Ning Kido, Eiji Duan, Kai-Kai Yang, Yang Higuchi, Ryo Fan, Yi-Zhong Wang, Tao Jiang, Lu-Yao Li, Rong-Lan Zhu, Ben-Yang Li, Xiang Xia, Zi-Qing Nagataki, Shigehiro Wei, Da-Ming Kusenko, Alexander High Energy Astrophysical Phenomena Astrophysics of Galaxies High Energy Physics - Phenomenology High Energy Physics - Theory Ultrahigh-energy cosmic rays (UHECRs) are the highest energy messenger from space, with energies exceeding 1 EeV. Although UHECRs were discovered over 60 years ago, their origin still remains a mystery. Pinpointing sources of UHECRs is crucial for understanding the extreme astrophysical processes that accelerate particles to such extraordinary energies. We searched for UHECR multiplets via analyzing 17 years of data with energies greater than 40 EeV from the Pierre Auger Observatory. A spatial association is found between a multiplet of $25.7^{+6.2}_{-7.0}$ cosmic rays and the Sombrero galaxy with a local (global) significance of $4.5~σ~(3.3~σ)$. The Sombrero galaxy hosts a supermassive central black hole with a mass of $\sim1\times 10^9 M_{\odot}$ and exhibits large-scale radio lobes and jets. Our finding provides critical evidence on active supermassive black holes as the source of the highest-energy cosmic rays. |
| title | Evidence for the Sombrero Galaxy as an Accelerator of the Highest-Energy Cosmic Rays |
| topic | High Energy Astrophysical Phenomena Astrophysics of Galaxies High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2412.11966 |