Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Astrophysical Journal Letters L30 astroparticle physics elementary particles galaxies: active 2018 PAR00017887 ENG Astrophysical Journal Letters 2041-8205 ISI:000442002100004 2 10.3847/2041-8213/aad8c0 https://www.documentation.ird.fr/hor/PAR00017887 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers21-03/010081633.pdf 863 Horizon (IRD) 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 information from the IceCube time-dependent analysis that reported bursting activity centered on 2014 December 13, 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 has a smaller p-value been found. When considering that 107 sources have been investigated, the post-trial p-value for TXS 0506+056 corresponds to 87%. 060 ; 020 UR082 / UR235 Maroc