{
  "bibcode": "2020GCN.27651....1I",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn 25 April, 2020 at 23:26:46.35 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 threshold astrophysical neutrino purity for Bronze alerts is 30%. This alert has an estimated false alarm rate of 0.5 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/134013_16038252.amon), more sophisticated reconstruction algorithms have been applied offline, with the direction refined to:\n\nDate: 25 April 2020\nTime: 23:26:46.35 UT\nRA: 100.10 (+4.67/-3.14 deg  90% PSF containment) J2000\nDec: 53.57 (+2.45/-1.60 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 Fermi 4FGL or 3FHL catalog sources in the 90% uncertainty region. The nearest gamma-ray source in either catalog is 4FGL J0631.0+5626 at RA: 97.75 deg, Dec: 56.45 deg (3.18 deg away from the best-fit event position).\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",
  "circularId": 27651,
  "createdOn": 1587870195000,
  "email": "jmsantander@ua.edu",
  "subject": "IceCube-200425A - IceCube observation of a high-energy neutrino candidate event",
  "submitter": "Marcos Santander at U. Alabama/IceCube  <jmsantander@ua.edu>",
  "eventId": "IceCube-200425A"
}