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

  title={Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A},
  author={The IceCube and Fermi-LAT and Magic and Agile and Asas-Sn and Hawc and H.E.S.S. and Integral and Kanata and Kiso and Kapteyn and Liverpool telescope and Subaru and SwiftNuSTAR and Veritas and VLA17B-403 teams},
Neutrino emission from a flaring blazar Neutrinos interact only very weakly with matter, but giant detectors have succeeded in detecting small numbers of astrophysical neutrinos. Aside from a diffuse background, only two individual sources have been identified: the Sun and a nearby supernova in 1987. A multiteam collaboration detected a high-energy neutrino event whose arrival direction was consistent with a known blazar—a type of quasar with a relativistic jet oriented directly along our line… 

Detection of a flaring blazar coincident with an IceCube high-energy neutrino

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Cosmic neutrinos provide a unique window into the otherwise-hidden mechanism of particle acceleration in astrophysical objects. A flux of high-energy neutrinos was discovered in 2013, and the IceCube



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

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, suggesting that blazars are identifiable sources of the high-energy astrophysical neutrinos flux.

TANAMI Blazars in the IceCube PeV Neutrino Fields

ABSTRACT The IceCube Collaboration has announced the discovery of a neutrino flux in excess of the atmospheric background. Due to thesteeply falling atmospheric background spectrum, events at PeV


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