IceCube-201209A: No neutrino counterpart candidates in ANTARES search
Abstract
Using data from the ANTARES detector, we have performed a follow-up analysis of the recently reported single track-like event IceCube-201209A (GCN #29012 [https://gcn.gsfc.nasa.gov/gcn3/29012.gcn3]). The reconstructed origin was 34 degrees below the horizon for ANTARES. No up-going muon neutrino candidate events were recorded within 90% error box of the IceCube event during a +/- 1h time-window centered on the IceCube event time, and over which the potential source remained visible all time. This leads to a preliminary 90% confidence level upper limit on the muon-neutrino fluence from a point source of 16 GeV.cm^-2 over the energy range 3 TeV - 3 PeV (the range corresponding to 5-95% of the detectable flux) for an E^-2 power-law spectrum, and 30 GeV.cm^-2 (540 GeV - 275 TeV) for an E^-2.5 spectrum. A search over an extended time window of +/- 1 day has also yielded no detection (55 % visibility). ANTARES [http://antares.in2p3.fr/] is the largest undersea neutrino detector (Mediterranean Sea) and it is primarily sensitive to astrophysical neutrinos in the TeV-PeV energy range. At 10 TeV, the median angular resolution for muon neutrinos is about 0.5 degrees. In the range 1-100 TeV ANTARES has a competitive sensitivity to this position in the sky.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- December 2020
- Bibcode:
- 2020GCN.29023....1C