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

IceCube Collaboration, Fermi-LAT collaboration, MAGIC collaboration, AGILE, ASAS-SN, HAWC, H.E.S.S., INTEGRAL, Kanata, Kiso, and Subaru observing teams, Kapteyn, Liverpool telescope, Swift/NuSTAR, VERITAS, VLA/17B-403 team

Research output: Contribution to journalArticle

159 Scopus citations

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.

Original languageEnglish (US)
Article numbereaat1378
JournalScience
Volume361
Issue number6398
DOIs
StatePublished - Jul 13 2018

    Fingerprint

All Science Journal Classification (ASJC) codes

  • General

Cite this

IceCube Collaboration, Fermi-LAT collaboration, MAGIC collaboration, AGILE, ASAS-SN, HAWC, H.E.S.S., INTEGRAL, Kanata, Kiso, and Subaru observing teams, Kapteyn, Liverpool telescope, Swift/NuSTAR, VERITAS, & VLA/17B-403 team (2018). Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A. Science, 361(6398), [eaat1378]. https://doi.org/10.1126/science.aat1378