{
  "bibcode": "2019GCN.23918....1I",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn February 21st, 2019, IceCube detected a track-like, very-high-energy event with a high probability of being of astrophysical origin. The event was identified by the High Energy Starting Event (HESE) track selection. The IceCube detector was in a normal operating state. HESE tracks have a neutrino interaction vertex inside the detector and produce a muon that only partially traverses the detector volume, and have a high light level (a proxy for energy). �We encourage follow-up observations.\n\nAfter the initial automated alert (https://gcn.gsfc.nasa.gov/notices_amon/66688965_132229.amon), more \nsophisticated reconstruction algorithms have been applied offline, with the direction refined to:\n\nDate: 2019/02/21 \nTime: 08:25:40 UT\nRA: 268.81 [-1.8,+1.2] (deg �90% PSF containment) J2000\nDec: -17.04 [-0.5,+1.3] (deg 90% PSF containment) J2000\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": 23918,
  "createdOn": 1550756315000,
  "email": "itaboada@gatech.edu",
  "subject": "IceCube-190221A - IceCube observation of a high-energy neutrino candidate event",
  "submitter": "Ignacio Taboada at Georgia Inst of Tech  <itaboada@gatech.edu>",
  "eventId": "IceCube-190221A"
}