{
  "bibcode": "2021GCN.30010....1A",
  "body": "The AMON,  IceCube, and HAWC collaborations report:\n\nThe AMON NuEm stream channel found two coincidence alerts from the\nIceCube online neutrino selection + HAWC daily monitoring analysis.\nThe analysis looks for IceCube neutrino events -mostly atmospheric\nin origin- around the position and transit time of a HAWC cluster of\nlikely gamma rays, as identified in the integrated observations from\na single transit, in this case having a duration of ~6 hours.\n\nNuEM-210515A\nThe HAWC transit interval starts  from 05-14-2021 18:06:02 UT to\n05-15-2021 00:20:43 UT\n(End of the HAWC transit time)\n\nThe location of the coincidence is reported as\nRA (J2000): 93.64deg\nDec (J2000): 14.66 deg\nLocation uncertainty (50% containment): 0.15 deg (statistical only).\nLocation uncertainty (90% containment): 0.27 deg (statistical only).\n\nThe false alarm rate (FAR) of this coincidence is 3.93 per year.\n\nNuEM-210515B\nThe HAWC transit interval starts  from 05-14-2021 18:09:25 UT to\n05-15-2021 00:19:27 UT\n(End of the HAWC transit time)\n\nThe location of the coincidence is reported as\nRA (J2000): 93.93deg\nDec (J2000): 12.51deg\nLocation uncertainty (50% containment): 0.20 deg (statistical only).\nLocation uncertainty (90% containment): 0.36 deg (statistical only).\n\nThe false alarm rate (FAR) of this coincidence is 1.90 per year.\n\nWe encourage follow-up observations of the alert region contingent on\navailability of resources and interest, given the quoted FAR.\n\nAMON seeks to perform a real-time correlation analysis of the\nhigh-energy signals across all known astronomical messengers. More\ninformation about AMON can be found in https://www.amon.psu.edu/\nInformation of this analysis\nhttps://iopscience.iop.org/article/10.3847/1538-4357/abcaa4\nInformation on the IceCube collaboration: http://icecube.wisc.edu/\nInformation on the HAWC collaboration: https://www.hawc-observatory.org",
  "circularId": 30010,
  "createdOn": 1621048553000,
  "email": "hgayala@psu.edu",
  "subject": "AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEM-210515A and 210515B",
  "submitter": "Hugo Ayala at Pennsylvania State University  <hgayala@psu.edu>"
}