{
  "subject": "IceCube-200512A: IceCube observation of a high-energy neutrino candidate event",
  "eventId": "IceCube-200512A",
  "bibcode": "2020GCN.27719....1I",
  "createdOn": 1589281102000,
  "circularId": 27719,
  "submitter": "Cristina Lagunas Gualda at DESY  <cristina.lagunas@desy.de>",
  "email": "cristina.lagunas@desy.de",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn 20/05/12 at 07:31:27.76 UT IceCube detected a track-like event with a moderate probability of being of astrophysical origin. The event was selected by the ICECUBE_Astrotrack_Bronze alert stream.  The average astrophysical neutrino purity for Bronze alerts is 30%. This alert has an estimated false alarm rate of 2.61 events per year due to atmospheric backgrounds. The IceCube detector was in a normal operating state at the time of detection. \n\nAfter the initial automated alert (https://gcn.gsfc.nasa.gov/notices_amon_g_b/134081_58268464.amon), more sophisticated reconstruction algorithms have been applied offline, with the direction refined to:\n\nDate: 20/05/12 \nTime: 07:31:27.76 UT\nRA: 295.18 (+1.72 -2.26 deg 90% PSF containment) J2000\nDec: 15.79 (+1.26 -1.29 deg 90% PSF containment) J2000\n\nWe encourage follow-up by ground and space-based instruments to help identify a possible astrophysical source for the candidate neutrino.\n\nThere are no 4FGL sources inside the 90% localization region. The closest source is 4FGL J1947.1+1729 located at RA 296.78 deg and dec 17.49 deg  (at a distance of 2.28 degrees from the best-fit location).\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu"
}