Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert

Aartsen, M.G.; Ackermann, M.; Adams, J.; Aguilar, J.A.; Ahlers, M.; Ahrens, M.; Al Samarai, I.; Altmann, D.; Andeen, K.; Anderson, T.; Ansseau, I.; Anton, G.; Arguelles, C.; Arsioli, B.; Auffenberg, J.; Axani, S.; Bagherpour, H.; Bai, X.; Barron, J.P.; Barwick, S.W.; et al.

Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/117727

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Type:	Journal article
Title:	Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
Author:	Aartsen, M.G. Ackermann, M. Adams, J. Aguilar, J.A. Ahlers, M. Ahrens, M. Al Samarai, I. Altmann, D. Andeen, K. Anderson, T. Ansseau, I. Anton, G. Arguelles, C. Arsioli, B. Auffenberg, J. Axani, S. Bagherpour, H. Bai, X. Barron, J.P. Barwick, S.W. et al.
Citation:	Science, 2018; 361(6398):147-151
Publisher:	American Association for the Advancement of Science
Issue Date:	2018
ISSN:	0036-8075 1095-9203
Statement of Responsibility:	M.G. Aartsen … G.C. Hill .. A. Kyriacou … S. Robertson … A. Wallace … B.J. Whelan … [et al.] (The IceCube Collaboration)
Abstract:	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.
Keywords:	IceCube Collaboration
Rights:	© 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. http://www.sciencemag.org/about/science-licenses-journal-article-reuseThis is an article distributed under the terms of the Science Journals Default License.
DOI:	10.1126/science.aat2890
Grant ID:	ARC
Published version:	http://dx.doi.org/10.1126/science.aat2890
Appears in Collections:	Aurora harvest 8 Physics publications

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