[vsnet-grb-info 26920] IceCube-201209A: No neutrino counterpart candidates in ANTARES search
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Dec 10 19:47:51 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 29023
SUBJECT: IceCube-201209A: No neutrino counterpart candidates in ANTARES search
DATE: 20/12/10 10:46:53 GMT
FROM: Antoine Kouchner at ANTARES Collaboration <kouchner at apc.in2p3.fr>
Alexis Coleiro (APC/Universite de Paris) and Damien Dornic (CPPM/CNRS) on behalf of the ANTARES Collaboration.
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.
More information about the vsnet-grb-info
mailing list