Search for neutrinos from TXS 0506+056 with the ANTARES telescope
A. Albert, M. Andr\`e, M. Anghinolfi, G. Anton, M. Ardid, J.-J., Aubert, J. Aublin, T. Avgitas, B. Baret, J. Barrios-Mart\`i, S. Basa, B., Belhorma, V. Bertin, S. Biagi, R. Bormuth, J. Boumaaza, S. Bourret, M.C., Bouwhuis, H. Branzas, R. Bruijn, J. Brunner, J. Busto, A. Capone

TL;DR
This paper reports on three neutrino searches by the ANTARES telescope for TXS 0506+056, finding no significant neutrino signals associated with the source over a decade-long observation period.
Contribution
It presents the first comprehensive multi-method neutrino search for TXS 0506+056 using ANTARES data, including online, time-integrated, and time-dependent analyses.
Findings
No significant neutrino excess detected from TXS 0506+056.
The time-integrated analysis found 1.03 signal events with a 3.4% p-value.
Post-trial p-value for TXS 0506+056 is 87%, indicating no significant association.
Abstract
The results of three different searches for neutrino candidates, associated with the IceCube-170922A event or from the direction of TXS 0506+056, by the ANTARES neutrino telescope are presented. The first search refers to the online follow-up of the IceCube alert; the second is based on the standard time-integrated method employed by the Collaboration to search for point-like neutrino sources; the third uses the information from the IceCube time-dependent analysis reporting a bursting activity centered on December 13, 2014, as input for an ANTARES time-dependent analysis. The online follow-up and the time-dependent analysis yield no events related to the source. The time-integrated study performed over a period from 2007 to 2017 fits 1.03 signal events, which corresponds to a p-value of 3.4% (not considering trial factors). Only for two other astrophysical objects in our candidate list,…
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