{
  "bibcode": "2020GCN.28592....1C",
  "body": "Alberto Carrami��ana (INAOE) reports on behalf of the HAWC\ncollaboration (http://www.hawc-observatory.org/collaboration):\n\nOn 2020/10/07 22:01:49 UTC, the IceCube collaboration reported a \ntrack-like very-high-energy event  that has a high probability of \nbeing an astrophysical neutrino, IceCube-201007A. Location is at\nRA: 265.17 (+/-0.52 deg  90% PSF containment) J2000\nDec: 5.34 (+0.32/-0.23 deg 90% PSF containment) J2000  \n(GCN circular 28575).\n\nWe performed two types of analyses for the follow-up. The first is for\na steady source in archival data and the second is a search for a \ntransient source. We assume a power-law spectrum with an index of -2.3\nfor both analyses. \n\n- Search for a steady source in archival data:\nThe archival data spans from November 2014 to June 2019. We searched\ninside the reported IceCube error region. \nThe most significant location, with p-value 1.29e-02 (3.70e-02 post-trials), \nis at RA 264.86 deg, Dec +5.23 deg (��0.15 deg 68% containment) J2000. \nWe set a time-integrated 95% CL  upper limit on gamma rays at the \nmaximum position of:\n\nE^2 dN/dE = 2.57e-13 (E/TeV)^-0.3 TeV.cm^-2.s^-1\n\n- Search for a transient source. \nThe IceCube event was in our field of view at the time reported.\n\nData acquisition started on 2020/10/07 20:06:38 UTC and ended\n2020/10/08 01:58:29 UTC.\nThe most significant location, with p-value 3.97e-01 (7.71e-01 post-trials),\nis at RA 265.25 deg, Dec +5.34 deg (��0.27 deg 68% containment) J2000.\nWe set a time-integrated 95% CL upper limit at the position of \nmaximum significance of:\n\nE^2 dN/dE = 6.47e-12 (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": 28592,
  "createdOn": 1602267043000,
  "email": "alberto@inaoep.mx",
  "subject": "IceCube-201007A: No significant detection in HAWC",
  "submitter": "Alberto Carraminana at AzTEC  <alberto@inaoep.mx>",
  "eventId": "IceCube-201007A"
}