AGILE Detection of Gamma-Ray Sources Coincident with Cosmic Neutrino Events
Journal
THE ASTROPHYSICAL JOURNAL
Date Issued
2019
Author(s)
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Donnarumma, I.
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Barbiellini, G.
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Cattaneo, P. W.
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Chen, A.
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Colafrancesco, S.
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Cocco, G. Di
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Ferrari, A.
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Galli, M.
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Giommi, P.
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Lipari, P.
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Longo, F.
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Morselli, A.
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Paoletti, F.
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Picozza, P.
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Rappoldi, A.
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DOI
10.3847/1538-4357/aaf1c0
Abstract
The origin of cosmic neutrinos is still largely unknown. Using data obtained by the gamma-ray imager on board the Astro-rivelatore Gamma a Immagini Leggero (AGILE) satellite, we systematically searched for transient gamma-ray sources above 100 MeV that are temporally and spatially coincident with 10 recent high-energy neutrino IceCube events. We found three AGILE candidate sources that can be considered possible counterparts to neutrino events. Detecting three 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.
Volume
870
Issue
2
Start page
136
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