Person:
Nievas Rosillo, Mireia

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First Name
Mireia
Last Name
Nievas Rosillo
URI
https://hdl.handle.net/20.500.14352/86790
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Estructura de la Materia, Física Térmica y Electrónica
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Author: Barrio Uña, Juan Abel × Subject: 53 ×

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    Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
    (Science, 2018) 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; American Association for the Advancement of Science
    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.