Skip to main content
eScholarship
Open Access Publications from the University of California

Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A

  • Author(s): Aartsen, MG
  • Ackermann, M
  • Adams, J
  • Aguilar, JA
  • Ahlers, M
  • Ahrens, M
  • Al Samarai, I
  • Altmann, D
  • Andeen, K
  • Anderson, T
  • Ansseau, I
  • Anton, G
  • Argüelles, C
  • Auffenberg, J
  • Axani, S
  • Bagherpour, H
  • Bai, X
  • Barron, JP
  • Barwick, SW
  • Baum, V
  • Bay, R
  • Beatty, JJ
  • Becker Tjus, J
  • Becker, KH
  • Benzvi, S
  • Berley, D
  • Bernardini, E
  • Besson, DZ
  • Binder, G
  • Bindig, D
  • Blaufuss, E
  • Blot, S
  • Bohm, C
  • Börner, M
  • Bos, F
  • Böser, S
  • Botner, O
  • Bourbeau, E
  • Bourbeau, J
  • Bradascio, F
  • Braun, J
  • Brenzke, M
  • Bretz, HP
  • Bron, S
  • Brostean-Kaiser, J
  • Burgman, A
  • Busse, RS
  • Carver, T
  • Cheung, E
  • Chirkin, D
  • Christov, A
  • Clark, K
  • Classen, L
  • Coenders, S
  • Collin, GH
  • Conrad, JM
  • Coppin, P
  • Correa, P
  • Cowen, DF
  • Cross, R
  • Dave, P
  • Day, M
  • de André, JPAM
  • De Clercq, C
  • Delaunay, JJ
  • Dembinski, H
  • De Ridder, S
  • Desiati, P
  • de Vries, KD
  • de Wasseige, G
  • de With, M
  • Deyoung, T
  • Díaz-Vélez, JC
  • Di Lorenzo, V
  • Dujmovic, H
  • Dumm, JP
  • Dunkman, M
  • Dvorak, E
  • Eberhardt, B
  • Ehrhardt, T
  • Eichmann, B
  • Eller, P
  • Evenson, PA
  • Fahey, S
  • Fazely, AR
  • Felde, J
  • Filimonov, K
  • Finley, C
  • et al.

Published Web Location

http://arxiv.org/pdf/1807.08816.pdf
No data is associated with this publication.
Abstract

© The Authors, some rights reserved. Previous detections of individual astrophysical sources of neutrinos are limited to the Sun and the supernova 1987A, whereas the origins of the diffuse flux of high-energy cosmic neutrinos remain unidentified. On 22 September 2017, we detected a high-energy neutrino, IceCube-170922A, with an energy of e290 tera-electron volts. Its arrival direction was consistent with the location of a known g-ray blazar, TXS 0506+056, observed to be in a flaring state. An extensive multiwavelength campaign followed, ranging from radio frequencies to g-rays. These observations characterize the variability and energetics of the blazar and include the detection of TXS 0506+056 in very-high-energy g-rays. This observation of a neutrino in spatial coincidence with a g-ray-emitting blazar during an active phase suggests that blazars may be a source of high-energy neutrinos.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item