AGILE detection of gamma-ray sources coincident with cosmic neutrino events

The origin of cosmic neutrinos is still largely unknown. Using data obtained by the gamma-ray imager on board of the AGILE satellite, we systematically searched for transient gamma-ray sources above 100 MeV that are temporally and spatially coincident with ten recent high-energy neutrino IceCube eve...

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Bibliographic Details
Published in:arXiv.org 2018-11
Main Authors: Lucarelli, F, Tavani, M, Piano, G, Bulgarelli, A, Donnarumma, I, Verrecchia, F, Pittori, C, Antonelli, L A, Argan, A, Barbiellini, G, Caraveo, P, Cardillo, M, Cattaneo, P W, Chen, A, Colafrancesco, S, Costa, E, E Del Monte, G Di Cocco, Ferrari, A, Fioretti, V, Galli, M, Giommi, P, Giuliani, A, Lipari, P, Longo, F, Mereghetti, S, Morselli, A, Paoletti, F, Parmiggiani, N, Pellizzoni, A, Picozza, P, Pilia, M, Rappoldi, A, Trois, A, Ursi, A, Vercellone, S, Vittorini, V
Format: Article
Language:English
Subjects:
Gamma rays
High energy astronomy
Neutrinos
Online Access:Get full text
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Summary:The origin of cosmic neutrinos is still largely unknown. Using data obtained by the gamma-ray imager on board of the AGILE satellite, we systematically searched for transient gamma-ray sources above 100 MeV that are temporally and spatially coincident with ten recent high-energy neutrino IceCube events. We find three AGILE candidate sources that can be considered possible counterparts to neutrino events. Detecting 3 gamma-ray/neutrino associations out of 10 IceCube events is shown to be unlikely due to a chance coincidence. One of the sources is related to the BL Lac source TXS 0506+056. For the other two AGILE gamma-ray sources there are no obvious known counterparts, and both Galactic and extragalactic origin should be considered.
ISSN:2331-8422
DOI:10.48550/arxiv.1811.07689