Association of IceCube neutrinos with radio sources observed at Owens Valley and Metsähovi Radio Observatories

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHovatta, T.en_US
dc.contributor.authorLindfors, E.en_US
dc.contributor.authorKiehlmann, S.en_US
dc.contributor.authorMax-Moerbeck, W.en_US
dc.contributor.authorHodges, M.en_US
dc.contributor.authorLiodakis, I.en_US
dc.contributor.authorLähteemäki, A.en_US
dc.contributor.authorPearson, T. J.en_US
dc.contributor.authorReadhead, A.C.S.en_US
dc.contributor.authorReeves, R. A.en_US
dc.contributor.authorSuutarinen, S.en_US
dc.contributor.authorTammi, J.en_US
dc.contributor.authorTornikoski, M.en_US
dc.contributor.departmentMetsähovi Radio Observatoryen
dc.contributor.departmentDepartment of Electronics and Nanoengineeringen
dc.contributor.groupauthorAnne Lähteenmäki Groupen
dc.contributor.organizationUniversity of Turkuen_US
dc.contributor.organizationUniversidad de Chileen_US
dc.contributor.organizationCalifornia Institute of Technologyen_US
dc.contributor.organizationUniversidad de Concepciónen_US
dc.contributor.organizationMetsähovi Radio Observatoryen_US
dc.contributor.organizationFoundation for Research and Technology - Hellasen_US
dc.date.accessioned2021-08-04T06:47:09Z
dc.date.available2021-08-04T06:47:09Z
dc.date.issued2021-06-10en_US
dc.descriptionPublisher Copyright: © 2020 American Society of Mechanical Engineers (ASME). All rights reserved.
dc.description.abstractContext. Identifying the most likely sources for high-energy neutrino emission has been one of the main topics in high-energy astrophysics ever since the first observation of high-energy neutrinos by the IceCube Neutrino Observatory. Active galactic nuclei with relativistic jets, also known as blazars, have been considered to be one of the main candidates because of their ability to accelerate particles to high energies. Aims. We study the connection between radio emission and IceCube neutrino events using data from the Owens Valley Radio Observatory (OVRO) and Metsähovi Radio Observatory blazar monitoring programs. Methods. We identify sources in our radio monitoring sample that are positionally consistent with IceCube high-energy neutrino events. We estimate their mean flux density and variability amplitudes around the neutrino arrival time, and compare these with values from random samples to establish the significance of our results. Results. We find radio source associations within our samples with 15 high-energy neutrino events detected by IceCube. Nearly half of the associated sources are not detected in the -ray energies, but their radio variability properties and Doppler boosting factors are similar to the -ray detected objects in our sample, meaning that they could still be potential neutrino emitters. We find that the number of strongly flaring objects in our statistically complete OVRO samples is unlikely to be a random coincidence (at 2_ level). Conclusions. Based on our results, we conclude that although it is clear that not all neutrino events are associated with strong radio flaring blazars, observations of large-amplitude radio flares in a blazar at the same time as a neutrino event are unlikely to be a random coincidence.en
dc.description.versionPeer revieweden
dc.format.extent17
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHovatta, T, Lindfors, E, Kiehlmann, S, Max-Moerbeck, W, Hodges, M, Liodakis, I, Lähteemäki, A, Pearson, T J, Readhead, A C S, Reeves, R A, Suutarinen, S, Tammi, J & Tornikoski, M 2021, ' Association of IceCube neutrinos with radio sources observed at Owens Valley and Metsähovi Radio Observatories ', Astronomy and Astrophysics, vol. 650, A83 . https://doi.org/10.1051/0004-6361/202039481en
dc.identifier.doi10.1051/0004-6361/202039481en_US
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.otherPURE UUID: f1d4101c-ac91-4a5c-b87d-80709f37f451en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/f1d4101c-ac91-4a5c-b87d-80709f37f451en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85107994260&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/65335216/ELEC_Hovatta_etal_Association_of_IceCube_neutrinos_A_A_2021_finalpublishedversion.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/108998
dc.identifier.urnURN:NBN:fi:aalto-202108048242
dc.language.isoenen
dc.publisherEDP SCIENCES
dc.relation.ispartofseriesAstronomy and Astrophysicsen
dc.relation.ispartofseriesVolume 650en
dc.rightsopenAccessen
dc.subject.keywordBL Lacertae objects: generalen_US
dc.subject.keywordGalaxies: jetsen_US
dc.subject.keywordNeutrinosen_US
dc.subject.keywordQuasars: generalen_US
dc.subject.keywordRadio continuum: galaxiesen_US
dc.titleAssociation of IceCube neutrinos with radio sources observed at Owens Valley and Metsähovi Radio Observatoriesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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