Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
RENAULT-TINACCI, N.
Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
Institut d'Astrophysique de Paris [IAP]
Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
Institut d'Astrophysique de Paris [IAP]
LAURENT, P.
AstroParticule et Cosmologie [APC (UMR_7164)]
Département d'Astrophysique (ex SAP) [DAP]
< Reduce
AstroParticule et Cosmologie [APC (UMR_7164)]
Département d'Astrophysique (ex SAP) [DAP]
Language
en
Article de revue
This item was published in
Science. 2018, vol. 361, n° 6398, p. eaat1378
English Abstract
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: ...Read more >
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.Read less <
English Keywords
blazar: emission
gamma ray: emission
gamma ray: VHE
supernova
flux
messenger
neutrino
background
quasar
jet: relativistic
Origin
Hal imported
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