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

Autori
Babić, Ana ; ... ; Dominis Prester, Dijana ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... ; Lelas, Damir ; ... ; Manganaro, Marina ; ... ; Puljak, Ivica ; ... ; Šnidarić, Iva ; ... ; Surić, Tihomir ; ... ; Terzić, Tomislav ; ... ; Zarić, Darko

Kolaboracija
IceCube Collaboration ; MAGIC Collaboration ; Fermi-LAT Collaboration ; AGILE Collaboration ; ASAS-SN Collaboration ; HAWC Collaboration ; H.E.S.S. Collaboration ; INTEGRAL Collaboration ; Kanata Collaboration ; Kiso Collaboration ; Kapteyn Collaboration ; Liverpool Telescope Collaboration ; Subaru Collaboration ; Swift/NuSTAR Collaboration ; VERITAS Collaboration ; VLA/17B-403 Collaboration

Izvornik
Science (0036-8075) 361 (2018), 6398; Eaat1378, 8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
neutrino event IceCube-170922A ; gamma-ray blazar TXS 0506+056

Sažetak
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 e 290 tera–electron volts. Its arrival direction was consistent with the location of a known gamma-ray blazar, TXS 0506+056, observed to be in a flaring state. An extensive multiwavelength campaign followed, ranging from radio frequencies to g-rays. These observations characterize the variability and energetics of the blazar and include the detection of TXS 0506+056 in very-high-energy g-rays. This observation of a neutrino in spatial coincidence with a gamma-ray–emitting blazar during an active phase suggests that blazars may be a source of high-energy neutrinos.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA