Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alertShow others and affiliations
Number of Authors: 3302018 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 361, no 6398, p. 147-151Article in journal (Refereed) Published
Abstract [en]
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 3.5 sigma 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.
Place, publisher, year, edition, pages
2018. Vol. 361, no 6398, p. 147-151
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-159073DOI: 10.1126/science.aat2890ISI: 000438449200038PubMedID: 30002248Scopus ID: 2-s2.0-85049849892OAI: oai:DiVA.org:su-159073DiVA, id: diva2:1241634
2018-08-242018-08-242022-10-25Bibliographically approved