{
  "bibcode": "2019GCN.24864....1G",
  "body": "Antonio Galv��n (IA-UNAM), Israel Martinez-Castellanos (UMD) and Ignacio\nTaboada (GaTech) report on behalf of the HAWC\ncollaboration (http://www.hawc-observatory.org/collaboration/):\n\nOn June 19, 2019, 13:14:18.04 UT, the IceCube collaboration reported a\ntrack-like very-high-energy event that has a high probability of being\nan astrophysical neutrino, IceCube-190619A, at RA 343.26 deg and Dec\n10.73 deg, J2000 (GCN circular 24854). In HAWC's sky, the neutrino\nwas at zenith of 26.44 deg and setting. We have searched for a steady\nsource as well as a transient source.\n\n* Search for a steady source in archival data from November 2014 to\nMay 2018. Assuming a spectral index of -2.3 we searched in a 4.08\ndegree circle around IceCube's reported location. The highest\nsignificance, 3.02 sigma, was at RA= 344.88 deg, Dec= 13.28 deg\n(J2000). Note that there are at least 200 trials in this search, so\npost-trials significance is lower. We set a time-integrated upper\nlimit 95% CL on gamma rays of:\nE^2 dN/dE = 2.59e-13 (E/TeV)^-0.3 TeV cm^-2 s^-1\n\n* Search for a transient source. We have studied the transit of the\nevent in HAWC's field of view (start 2019/06/19 08:30:06 UTC / stop\n2019/06/19 14:37:06 UTC). The most significant location, within 4.08\ndeg, is 3.44 sigma (RA = 338.93 deg, Dec = 9.99 deg, J2000).\nWe set a time-integrated upper limit 95% CL on gamma rays of:\nE^2 dN/dE = 1.56e-11 (E/TeV)^-0.3 TeV cm^-2 s^-1\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 from\n300 GeV to 100 TeV.",
  "circularId": 24864,
  "createdOn": 1561040486000,
  "email": "imc@umd.edu",
  "subject": "IceCube-190619A - HAWC follow-up",
  "submitter": "Israel Martinez-Castellanos at UMD/HAWC  <imc@umd.edu>",
  "eventId": "IceCube-190619A"
}