{
  "bibcode": "2019GCN.25766....1H",
  "body": "The HAWC Collaboration\n(http://www.hawc-observatory.org/collaboration/) reports:On September\n17, 2019, at 01:14:19 UT, HAWC detected a burst signal from its Burst\nMonitoring named HAWC-190917A. This monitor system looks for excesses\nabove the expected background in time windows of 0.2, 1, 10 and 100\nseconds. This event was found in the 1-second time window starting at\nthe reported trigger time. The position of the alert is RA (J200):\n321.84 deg\nDec (J2000): 30.97 deg\nLocation uncertainty (68% containment): 0.8 deg (statistical only).\nThe monitor system found that this alert has a false alarm rate of\n7.78 alert(s) per year. We strongly encourage follow-up observations\nof the HAWC alert region. The initial automated alert is recorded in\nhere: https://gcn.gsfc.nasa.gov/notices_amon_hawc/18941_372.amon. HAWC\nis a very-high-energy gamma-ray observatory operating in Central\nMexico at latitude 19 deg. north. Operating day and night with over\n95% duty cycle, HAWC has an instantaneous field of view of 2 sr and\nsurveys 2/3 of the sky every day. It is sensitive to gamma rays from\n300 GeV to 100 TeV.\n\n[GCN OPS NOTE(22sep19): Per author's request, in the SUBJECT-line\nthe \"190916A\" was changed to \"190917A\"; the date in the first\nsentence was changed from \"September 16\" to September 17\", and\nthe ID name was changed from \"HAWC-190916A\" to \"HAWC-190917A\".]",
  "circularId": 25766,
  "createdOn": 1568687334000,
  "email": "hgayala@psu.edu",
  "subject": "Alert from the HAWC Burst Monitor HAWC-190917A",
  "submitter": "Hugo Ayala at Pennsylvania State University  <hgayala@psu.edu>",
  "eventId": "HAWC-190917A"
}