Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
A high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this association, we investigated 9.5 years of IceCube neutrino observations to search for excess emission at the position of th...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Published: |
American Association for the Advancement of Science
2018
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| _version_ | 1797086493480583168 |
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| author | IceCube Collaboration Aartsen, M Ackermann, M Adams, J Sarkar, S |
| author_facet | IceCube Collaboration Aartsen, M Ackermann, M Adams, J Sarkar, S |
| author_sort | IceCube Collaboration |
| collection | OXFORD |
| description | A high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this association, we investigated 9.5 years of IceCube neutrino observations to search for excess emission at the position of the blazar. We found an excess of high-energy neutrino events, with respect to atmospheric backgrounds, at that position between September 2014 and March 2015. Allowing for time-variable flux, this constitutes 3.5σ evidence for neutrino emission from the direction of TXS 0506+056, independent of and prior to the 2017 flaring episode. This suggests that blazars are identifiable sources of the high-energy astrophysical neutrino flux. |
| first_indexed | 2024-03-07T02:22:51Z |
| format | Journal article |
| id | oxford-uuid:a48ed728-7640-4b10-a918-32f16a773bde |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:22:51Z |
| publishDate | 2018 |
| publisher | American Association for the Advancement of Science |
| record_format | dspace |
| spelling | oxford-uuid:a48ed728-7640-4b10-a918-32f16a773bde2022-03-27T02:34:36ZNeutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alertJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a48ed728-7640-4b10-a918-32f16a773bdeSymplectic Elements at OxfordAmerican Association for the Advancement of Science2018IceCube CollaborationAartsen, MAckermann, MAdams, JSarkar, SA high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this association, we investigated 9.5 years of IceCube neutrino observations to search for excess emission at the position of the blazar. We found an excess of high-energy neutrino events, with respect to atmospheric backgrounds, at that position between September 2014 and March 2015. Allowing for time-variable flux, this constitutes 3.5σ evidence for neutrino emission from the direction of TXS 0506+056, independent of and prior to the 2017 flaring episode. This suggests that blazars are identifiable sources of the high-energy astrophysical neutrino flux. |
| spellingShingle | IceCube Collaboration Aartsen, M Ackermann, M Adams, J Sarkar, S Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title | Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title_full | Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title_fullStr | Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title_full_unstemmed | Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title_short | Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert |
| title_sort | neutrino emission from the direction of the blazar txs 0506 056 prior to the icecube 170922a alert |
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