Science· 2018Q1
Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
- 1,139citations
- Q1SCImago
- 2018year
Short summary
A high-energy neutrino (IceCube-170922A) was detected arriving from the direction of a flaring blazar, TXS 0506+056, marking the first potential identification of a blazar as a source of such neutrinos.
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Key points
- A ~290 tera-electron volt neutrino (IceCube-170922A) was detected on September 22, 2017.
- The neutrino's arrival direction coincided with the blazar TXS 0506+056, which was observed to be in a flaring state.
- A comprehensive multiwavelength campaign confirmed the blazar's activity and its emission in very-high-energy gamma-rays.
- This is the first observation linking a high-energy neutrino to a specific astrophysical source other than supernovae or the Sun.
AI-generated from the title and abstract; the full text is not read.
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 ~290 tera-electron volts. Its arrival direction was consistent with the location of a known γ-ray blazar, TXS 0506+056, observed to be in a flaring state. An extensive multiwavelength campaign followed, ranging from radio frequencies to γ-rays. These observations characterize the variability and energetics of the blazar and include the detection of TXS 0506+056 in very-high-energy γ-rays. This observation of a neutrino in spatial coincidence with a γ-ray-emitting blazar during an active phase suggests that blazars may be a source of high-energy neutrinos.
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