{
  "bibcode": "2019GCN.25946....1B",
  "body": "A. Biland (ETH Zurich) reports on behalf of the FACT Collaboration:\n\nOn Tue 01 Oct 19 20:09:48 UTC, the IceCube collaboration reported the\ndetection of a high-energy neutrino (run number 133119, event number\n22683750).\n\nFACT observed the position of the neutrino for a total of 5.13\nhours on Oct 1st and Oct 2nd. The automatic quick-look analysis does\nnot show any signal from the observed position. Preliminary results can\nbe found at\nhttps://fact-project.org/monitoring/index.php?y=2019&m=10&d=02&source=3748&timebin=12&plot=week\nhttps://fact-project.org/monitoring/index.php?y=2019&m=10&d=02&source=3748&timebin=3&plot=night\nhttps://fact-project.org/monitoring/index.php?y=2019&m=10&d=01&source=3748&timebin=3&plot=night\n\n From the results of the quick-look analysis, an upper limit of 24% of\nthe flux of the Crab Nebula at TeV energies was determined with a\nconfidence level of 99%.\n\nContact person: Daniela Dorner (dorner@astro.uni-wuerzburg.de)\n\nThe First G-APD Cherenkov Telescope (FACT) is an imaging air Cherenkov\ntelescope monitoring blazars at TeV energies. It is located in the\nObservatorio del Roque de los Muchachos on the Canary Island La Palma.\n\n[GCN OPS_NOTE(05oct19): \"Title:\" was removed from the SUBJECT:-line.]",
  "circularId": 25946,
  "createdOn": 1570220262000,
  "email": "dorner@astro.uni-wuerzburg.de",
  "subject": "FACT follow-up of IceCube-191001A",
  "submitter": "Daniela Dorner at U of Wuerzburg  <dorner@astro.uni-wuerzburg.de>",
  "eventId": "IceCube-191001A"
}