{
  "bibcode": "2020GCN.28709....1H",
  "body": "The HAWC Collaboration  (http://www.hawc-observatory.org/collaboration/)\nreports:\nOn 2020-10-19, at 21:43:42 UT, HAWC detected a burst signal\nfrom its Burst Monitoring named HAWC-201019A. This monitor system looks\nfor excesses above the expected background in time windows of 0.2, 1, 10\nand 100 seconds.\n\nThis event was found in the 100-second time window starting\nat the reported trigger time.\nThe position of the alert is\nRA (J200): 203.148 deg\nDec (J2000): 29.717 deg\nLocation uncertainty (68% containment): 0.6 deg (statistical only).\n\nThe monitor system found that this alert has a false alarm rate of 2.37\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/gcn/notices_amon_hawc/1009678_72.amon\nWe note that a quick search on the FAVA monitoring\n(https://fermi.gsfc.nasa.gov/ssc/data/access/lat/FAVA/), an old\nalert, FAVA_223_2, is 0.29 deg away from HAWC-201019A, which\noccurred on 2012-11-05 15:43:35.\nSee:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/lat/FAVA/LightCurve.php?ra=203.148&dec=29.717\n\nThe source 4FGL J1330.7+2933 is located 0.43 deg away from HAWC-201019A\nand is also positionally consistent with the FAVA event.\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": 28709,
  "createdOn": 1603238890000,
  "email": "hgayala@psu.edu",
  "subject": "Alert from the HAWC Burst Monitor HAWC-201019A",
  "submitter": "Hugo Ayala at Pennsylvania State University  <hgayala@psu.edu>",
  "eventId": "HAWC-201019A"
}