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

• Published in: Science
• Main Authors: Domínguez Díaz, Alberto, Barrio Uña, Juan Abel, Contreras González, José Luis, Fonseca González, María Victoria, López Moya, Marcos, Nievas Rosillo, Mireia, Fidalgo, David, Sivakoff, Gregory
• Other Authors: American Association for the Advancement of Science
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Association for the Advancement of Science 2018
• Subjects: 53; Performance; Telescope; Spectrograph; Origin; Física (Física); 22 Física; Canada; Marsden; New Zealand; Swedish Polar Research Secretariat
• Online Access: https://hdl.handle.net/20.500.14352/100948; https://doi.org/10.1126/science.aat1378

Firmado por 966 autores (MAGIC Collaboration) 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. National Science Foundation Wisconsin Alumni Research Foundation University of Wisconsin-Madison Open Science Grid University of Illinois United States Department of Energy University of Maryland Michigan State University Marquette University Fonds de la Recherche Scientifique (Francia) Fund for Scientific Research (Belgium) FWO Odysseus programme Big Science programme Belgian Federal Science Policy Office Federal Ministry of Education & Research (Germany) German Research Foundation Helmholtz Alliance for Astroparticle Physics Helmholtz Association Rheinisch-Westfälische Technische Hochschule Aachen (Alemania) Swedish Research Council Swedish Polar Research Secretariat Swedish National Infrastructure for Computing Knut & Alice Wallenberg Foundation Australian Research Council Natural Sciences and Engineering Research Council of Canada Calcul Quebec (Canada) Compute Ontario (Canada) Canada Foundation for Innovation WestGrid Compute Canada Villum Fonden Danmarks Grundforskningsfond (Dinamarca) Royal Society of New Zealand Marsden Fund ...