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Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922AAckermann, Markus; Ansseau, Isabelle; Anton, Gisela; Tjus, Julia; Besson, David; Dave, Pranav; DeYoung, Ty; Dunkman, Matt; Felde, John; Hoinka, Tobias; Jacobi, Emanuel; Kelley, John; Koskinen, Jason; Leonard, Kayla; Luszczak, William; Meures, Thomas; Neer, Garrett; Nygren, Dave; O'Sullivan, Erin; Plum, Matthias; Reimann, Rene; Rott, Carsten; Ryckbosch, Dirk; Rysewyk, Devyn; Sandroos, Joakim; Tobin, Moriah; Tosi, Delia; Williams, Dawn; Baldini, Luca; Ballet, Jean; Barbiellini, Guido; Bastieri, Denis; Bregeon, Johan; Charles, Eric; Cutini, Sara; de Palma, Francesco; Digel, Seth; Giordano, Francesco; Grondin, Marie-Hélène; Krauss, Felicia; Lubrano, Pasquale; Malyshev, Dmitry; Porter, Troy; Principe, Giacomo; Reimer, Anita; Barres de Almeida, Ulisses; González, Josefa Becerra; Colak, Sidika Merve; Di Pierro, Federico; Fidalgo, David; Herrera, Javier; Hrupec, Dario; Minev, Milen; Moralejo, Abelardo; Nilsson, Kari; Pedaletti, Giovanna; Saito, Takayuki; Sitarek, Julian; Ward, John E.; Donnarumma, Imma; Ferrari, Attilio; Trois, Alessio; Vercellone, Stefano; Arteaga Velázquez, Juan Carlos; Bernal, Abel; Caballero Mora, Karen S.; Castillo Maldonado, Mario Alberto; Coutiño de León, Sara; DuVernois, Michael; Lee, William; Martinez Castellanos, Israel; González, Daniel Rosa; Rosenberg, Matthew; Ruiz-Velasco, Edna; Brun, F.; Büchele, M.; Casanova, S.; Grondin, M.-H.; Hoischen, C.; Jankowsky, F.; Lorentz, M.; Lypova, I.; Moderski, R.; Rudak, B.; Sasaki, M.; Schulz, A.; Taylor, A. M.; van Eldik, C.; Savchenko, V.; Kuulkers, E.; Mereghetti, S.; Archer, Avery; Finley, John; Fortson, Lucy; Otte, Adam; Pohl, Martin; Popkow, Alexis; Weinstein, Amanda; Wells, Rita; Miller-Jones, James
Science (American Association for the Advancement of Science), 07/2018, Letnik: 361, Številka: 6398Journal Article
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.
