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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.06440 |
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| _version_ | 1866911465519185920 |
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| author | Li, Rong-Lan Yuan, Chengchao He, Hao-Ning Wang, Yun Zhu, Ben-Yang Liang, Yun-Feng Jiang, Ning Wei, Da-Ming |
| author_facet | Li, Rong-Lan Yuan, Chengchao He, Hao-Ning Wang, Yun Zhu, Ben-Yang Liang, Yun-Feng Jiang, Ning Wei, Da-Ming |
| contents | Tidal disruption events (TDEs), in which stars are disrupted by supermassive black holes, have been proposed as potential sources of high-energy neutrinos through hadronic interactions. X-ray-bright TDEs provide dense photon fields conducive to neutrino production via proton-photon ($pγ$) processes. We conducted a time-dependent unbinned likelihood analysis of ten years (2008-2018) of IceCube muon-track data, focusing on ten TDEs with confirmed X-ray detections during this period. We report a neutrino flare candidate spatially and temporally coincident with the TDE ATLAS17jrp, occurring 19 days after the onset of its X-ray activity and lasting for 56 days, with a post-trial $p$-value of 0.01. This significance is modest, representing a hint of an association. We illustrate the neutrino emission using a simple lepton-hadronic model, where X-ray photons serve as target fields. While this model can account for the neutrino data around 100 TeV, the low-energy neutrinos may imply contributions from an additional component. Although constrained by the sample size of X-ray-detected TDEs, these results underscore the need for high-cadence X-ray monitoring and future neutrino observatories to further explore the connection between TDEs and high-energy neutrinos. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_06440 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A neutrino flare candidate potentially associated with X-ray emission from tidal disruption event ATLAS17jrp Li, Rong-Lan Yuan, Chengchao He, Hao-Ning Wang, Yun Zhu, Ben-Yang Liang, Yun-Feng Jiang, Ning Wei, Da-Ming High Energy Astrophysical Phenomena Tidal disruption events (TDEs), in which stars are disrupted by supermassive black holes, have been proposed as potential sources of high-energy neutrinos through hadronic interactions. X-ray-bright TDEs provide dense photon fields conducive to neutrino production via proton-photon ($pγ$) processes. We conducted a time-dependent unbinned likelihood analysis of ten years (2008-2018) of IceCube muon-track data, focusing on ten TDEs with confirmed X-ray detections during this period. We report a neutrino flare candidate spatially and temporally coincident with the TDE ATLAS17jrp, occurring 19 days after the onset of its X-ray activity and lasting for 56 days, with a post-trial $p$-value of 0.01. This significance is modest, representing a hint of an association. We illustrate the neutrino emission using a simple lepton-hadronic model, where X-ray photons serve as target fields. While this model can account for the neutrino data around 100 TeV, the low-energy neutrinos may imply contributions from an additional component. Although constrained by the sample size of X-ray-detected TDEs, these results underscore the need for high-cadence X-ray monitoring and future neutrino observatories to further explore the connection between TDEs and high-energy neutrinos. |
| title | A neutrino flare candidate potentially associated with X-ray emission from tidal disruption event ATLAS17jrp |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2411.06440 |