{
  "bibcode": "2021GCN.29958....1H",
  "body": "The HAWC Collaboration  (http://www.hawc-observatory.org/collaboration/)\nreports:\n\nOn May 07, 2021, at 10:38:22 UT, HAWC detected a burst signal\nfrom its Burst Monitoring named HAWC-210507A. This monitor system looks\nfor excesses above the expected background in time windows of 0.2, 1, 10\nand 100 seconds.\nThis event was found in the 10-second time window starting\nat the reported trigger time.\n\nThe position of the alert is\nRA (J200): 257.24 deg\nDec (J2000): 8.08 deg\nLocation uncertainty (68% containment): 0.4 deg (statistical only).\n\nThe monitor system found that this alert has a false alarm rate of 3.76\nalert(s) per year.\nWe encourage follow-up observations of the HAWC alert region. We however\nnote that it is\nconsistent with background expectation based on the observation time.\n\nThe initial automated alert is recorded here:\nhttps://gcn.gsfc.nasa.gov/notices_amon_hawc/1010067_1345.amon\n\nHAWC is 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\nfrom 300 GeV to 100 TeV.",
  "circularId": 29958,
  "createdOn": 1620402962000,
  "email": "hgayala@psu.edu",
  "subject": "Alert from the HAWC Burst Monitor HAWC-210507A",
  "submitter": "Hugo Ayala at Pennsylvania State University  <hgayala@psu.edu>",
  "eventId": "HAWC-210507A"
}