TITLE: GCN CIRCULAR NUMBER: 37614 SUBJECT: AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEm-240926A DATE: 24/09/26 19:34:25 GMT FROM: Hugo Ayala at Pennsylvania State University <hgayala@psu.edu> 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 6.06 hours. The HAWC transit interval starts from 2024/09/26 13:12:19 UT to 2024/09/26 19:01:26 UT (End of the HAWC transit time) The location of the coincidence is reported as RA (J2000): 149.97 deg Dec (J2000): 46.22 deg Location uncertainty (50% containment): 0.22 deg (statistical only). Location uncertainty (90% containment): 0.41 deg (statistical only). The false alarm rate (FAR) of this coincidence is 3.41 per year. We encourage follow-up observations of the alert region contingent on the availability of resources and interest, given the quoted FAR. A quick search in the region reveals the 4FGL source J0959.6+4606 it's ~0.1 deg away from the coincidence position. Other 4FGL sources that appear nearby are J0958.0+4728, J1008.1+4706 and J0950.2+4553 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 View this GCN Circular online at https://gcn.nasa.gov/circulars/37614. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...