Science· 2018Q1
Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
- 1,109citations
- Q1SCImago
- 2018year
Short summary
An excess of neutrinos was detected originating from the direction of the blazar TXS 0506+056, preceding a high-energy neutrino event.
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Key points
- A high-energy neutrino event (IceCube-170922A) was detected from the direction of the blazar TXS 0506+056.
- TXS 0506+056 was observed to be undergoing a gamma-ray flare at the time of the neutrino event.
- An analysis of several years of IceCube data revealed an excess of lower-energy neutrinos from the blazar's direction.
- This finding establishes blazars as a source of astrophysical neutrinos.
AI-generated from the title and abstract; the full text is not read.
Abstract
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 of sight. The blazar, TXS 0506+056, was found to be undergoing a gamma-ray flare, prompting an extensive multiwavelength campaign. Motivated by this discovery, the IceCube collaboration examined lower-energy neutrinos detected over the previous several years, finding an excess emission at the location of the blazar. Thus, blazars are a source of astrophysical neutrinos. Science , this issue p. 147 , p. eaat1378
The authors' abstract, as published at the source. Science, 2018 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy