{
  "bibcode": "2022GCN.32599....1I",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\n\nOn 22-09-28 at 12:32:38.30 UT IceCube detected a track-like event with a \nmoderate probability of being of astrophysical origin.�� The event was \nselected by the ICECUBE_Astrotrack_Bronze alert stream. The average \nastrophysical neutrino purity for Bronze alerts is 30%. This alert has \nan estimated false alarm rate of 1.99 events per year due to atmospheric \nbackgrounds. The IceCube detector was in a normal operating state at the \ntime of detection.\n\n\nAfter the initial automated alert \n(https://gcn.gsfc.nasa.gov/notices_amon_g_b/137096_70551815.amon), more \nsophisticated reconstruction algorithms have been applied offline, with \nthe direction refined to:\n\n\nDate: 22-09-28\n\nTime: 12:32:38.30\n\nRA: 207.42 (+1.41 / -2.52 deg�� 90% PSF containment) J2000\n\nDec: +10.43 (+0.98 / -0.98 deg 90% PSF containment) J2000\n\n\nWe encourage follow-up by ground and space-based instruments to help \nidentify a possible astrophysical source for the candidate neutrino.\n\n\nTwo gamma-ray sources listed in the 4FGL-DR2 Fermi-LAT catalog are \nlocated within the 90% containment of the best-fit candidate neutrino \nposition. The sources are 4FGL J1351.3+1115 and 4FGL J1342.6+0944, \nlocated 0.92 and 1.86 deg away from the best-fit position, respectively.\n\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector \noperating at the geographic South Pole, Antarctica. The IceCube realtime \nalert point of contact can be reached at roc@icecube.wisc.edu",
  "circularId": 32599,
  "createdOn": 1664371951000,
  "email": "lincetto@astro.rub.de",
  "subject": "IceCube-220928A - IceCube observation of a high-energy neutrino candidate track-like event",
  "submitter": "Dr. Massimiliano Lincetto at Ruhr-Universitaet Bochum  <lincetto@astro.rub.de>",
  "eventId": "IceCube-220928A"
}