Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 35579

AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEm-240118A: correction on the localization
2024-01-19T16:54:37Z (6 months ago)
Hugo Ayala at Pennsylvania State University <>
Web form

Hugo Alberto Ayala Solares <>
11:42 a.m. (hace 4 minutos)

para gcncirc

The AMON,  IceCube, and HAWC collaborations report:

The alert NuEM 240118A announced in GCN #35566 had 
an error in the localization of the coincidence for the RA coordinate.

The corrected values are:

The location of the coincidence is reported as
RA (J2000): 251.73 deg
Dec (J2000): 53.78 deg
Location uncertainty (50% containment): 0.30 deg (statistical only).
Location uncertainty (90% containment): 0.55 deg (statistical only).

We take advantage of this correction to mention that a 4FGL catalog source, 
J1649.4+5235 is 1deg away from the coincidence.

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
Information on the IceCube collaboration:
Information on the HAWC collaboration:
Looking for U.S. government information and services? Visit