Search for neutrinos from TXS 0506+056 with the ANTARES neutrino telescope
ATel #12274; A. Coleiro (APC) and D. Dornic (CPPM) on behalf of the Antares Collaboration
on 7 Dec 2018; 15:12 UT
Credential Certification: Antoine Kouchner (kouchner@apc.univ-paris-diderot.fr)
Subjects: Neutrinos, AGN, Blazar, Transient, Variables
Using online data from the ANTARES detector, we searched for muon neutrino events originating from the location of TXS 0506+056 over a 10-day time window (2018-11-27 00:00:00 UTC to 2018-12-07 00:00:00 UTC) including the gamma-ray flare period observed by MAGIC (ATel #12260) and the time period probed by IceCube (ATel #12267).The search was done in the sample of reconstructed tracks of particles propagating upward from below the horizon. No candidate events were recorded within three degrees of the blazar coordinates during this period. This yields a preliminary 90% confidence level upper limit on the muon-neutrino fluence from a point source of 4.5 GeV.cm^-2 over the energy range 4.7 TeV - 4.1 PeV (the range corresponding to 5-95% of the detectable flux) for an E^-2 power-law spectrum.
ANTARES is the largest neutrino detector installed in the Mediterranean Sea, and is primarily sensitive to astrophysical neutrinos in the TeV-PeV energy range. At 10 TeV, the median angular resolution for muon neutrinos is below 0.5 degrees.
