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Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
Tijdschriftbijdrage - Tijdschriftartikel
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.
Tijdschrift: Science
ISSN: 0036-8075
Issue: 6398
Volume: 361
Jaar van publicatie:2018
BOF-keylabel:ja
BOF-publication weight:10
CSS-citation score:4
Auteurs:International
Authors from:Higher Education
Toegankelijkheid:Open