@article{f9ccbc6330214dd19c43a8511de4e7b2,
title = "Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A",
abstract = "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.",
author = "\{Icecube Collaboration\} and \{Fermi-LAT collaboration\} and \{MAGIC Collaboration\} and AGILE and ASAS-SN and HAWC and H.E.S.S. and INTEGRAL and \{Kanata, Kiso, and Subaru observing teams\} and Kapteyn and \{Liverpool telescope\} and Swift/NuSTAR and VERITAS and \{VLA/17B-403 team\} and Aartsen, \{M. G.\} and M. Ackermann and J. Adams and Aguilar, \{J. A.\} and M. Ahlers and M. Ahrens and \{Al Samarai\}, I. and D. Altmann and K. Andeen and T. Anderson and I. Ansseau and G. Anton and C. Arg{\"u}elles and J. Auffenberg and S. Axani and H. Bagherpour and X. Bai and Barron, \{J. P.\} and Barwick, \{S. W.\} and V. Baum and R. Bay and Beatty, \{J. J.\} and \{Becker Tjus\}, J. and Becker, \{K. H.\} and S. Benzvi and D. Berley and E. Bernardini and Besson, \{D. Z.\} and G. Binder and D. Bindig and E. Blaufuss and S. Blot and C. Bohm and M. B{\"o}rner and F. Bos and S. B{\"o}ser and O. Botner and E. Bourbeau and J. Bourbeau and F. Bradascio and J. Braun and M. Brenzke and Bretz, \{H. P.\} and S. Bron and J. Brostean-Kaiser and A. Burgman and Busse, \{R. S.\} and T. Carver and E. Cheung and D. Chirkin and A. Christov and K. Clark and L. Classen and S. Coenders and Collin, \{G. H.\} and Conrad, \{J. M.\} and P. Coppin and P. Correa and Cowen, \{D. F.\} and R. Cross and P. Dave and M. Day and \{de Andr{\'e}\}, \{J. P.A.M.\} and \{De Clercq\}, C. and Delaunay, \{J. J.\} and H. Dembinski and \{De Ridder\}, S. and P. Desiati and \{de Vries\}, \{K. D.\} and \{de Wasseige\}, G. and \{de With\}, M. and T. Deyoung and D{\'i}az-V{\'e}lez, \{J. C.\} and \{Di Lorenzo\}, V. and H. Dujmovic and Dumm, \{J. P.\} and M. Dunkman and E. Dvorak and B. Eberhardt and T. Ehrhardt and B. Eichmann and P. Eller and Evenson, \{P. A.\} and S. Fahey and Fazely, \{A. R.\} and J. Felde and K. Filimonov and C. Finley and S. Flis and A. Franckowiak and E. Friedman and A. Fritz and Gaisser, \{T. K.\} and J. Gallagher and L. Gerhardt and K. Ghorbani and T. Glauch and T. Gl{\"u}senkamp and A. Goldschmidt and Lang, \{M. J.\}",
note = "Publisher Copyright: {\textcopyright} The Authors, some rights reserved.",
year = "2018",
month = jul,
day = "13",
doi = "10.1126/science.aat1378",
language = "English",
volume = "361",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6398",
}