TITLE: GCN CIRCULAR NUMBER: 26963 SUBJECT: AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEm-200202A DATE: 20/02/02 16:33:45 GMT FROM: Hugo Ayala at Pennsylvania State University The AMON, IceCube and HAWC collaborations report: The AMON NuEm stream channel found a coincidence alert from the IceCube online neutrino selection + HAWC daily monitoring analysis. The analysis looks for IceCube neutrino events -mostly atmospheric in origin- around the position and transit time of a HAWC cluster of likely gamma rays, as identified in the integrated observations from a single transit, in this case having a duration of 6.16 hours. The HAWC transit interval is from 02, 02, 2020 7:58:52 UT to 02 02, 2020, at 14:07:52 UT (End of the HAWC transit time) The location of the coincidence is reported as RA (J2000): 200.3 deg Dec (J2000): 12.71 deg Location uncertainty (50% containment): 0.17 deg (statistical only). Location uncertainty (90% containment): 0.31 deg (statistical only). The false alarm rate (FAR) of this coincidence is 1.39. We encourage follow-up observations of the alert region contingent on availability of resources and interest, given the quoted FAR. These circulars will be substituted for GCN Notices in the near future. AMON seeks to perform a real-time correlation analysis of the high-energy signals across all known astronomical messengers. More information about AMON can be found in https://www.amon.psu.edu/ Information on the IceCube collaboration: http://icecube.wisc.edu/ Information on the HAWC collaboration: https://www.hawc-observatory.org