{
  "bibcode": "2020GCN.28002....1C",
  "body": "Alexis Coleiro (APC/Universite de Paris) and Damien Dornic (CPPM/CNRS) on behalf of the ANTARES Collaboration. <br>  \n\nUsing data from the ANTARES detector, we have performed a follow-up analysis of the recently reported single track-like event IceCube-200620A (GCN 27997<https://gcn.gsfc.nasa.gov/gcn3/27997.gcn3 <https://gcn.gsfc.nasa.gov/gcn3/27997.gcn3>>). The original reconstructed origin was 31.9 degrees below the horizon for ANTARES. <br> \nNo up-going muon neutrino candidate events were recorded in a 3 deg cone around the location of the IceCube event coordinates (accounting for the reported uncertainties) during a +/- 1h time-window centered on the IceCube event time, and over which the potential source remained visible all time. <br>\nThis leads to a preliminary 90% confidence level upper limit on the muon-neutrino fluence from a point source of about 15 GeV.cm^-2 over the energy range 5 TeV ���4 PeV (the range corresponding to 5-95% of the detectable flux) for an E^-2 power-law spectrum, and about 30 GeV.cm^-2 (810 GeV - 405 TeV) for an E^-2.5 spectrum. \nA search over an extended time window of +/- 1 day has also yielded no detection (44% visibility). <br>\nANTARES <http://antares.in2p3.fr/ <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.",
  "circularId": 28002,
  "createdOn": 1592721745000,
  "email": "kouchner@apc.in2p3.fr",
  "subject": "IceCube-200620A: No ANTARES neutrino counterpart",
  "submitter": "Antoine Kouchner at ANTARES Collaboration  <kouchner@apc.in2p3.fr>",
  "eventId": "IceCube-200620A"
}