{
  "bibcode": "2019GCN.24988....1I",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nIceCube has performed a search for additional track-like muon neutrino events arriving\nfrom the direction of IceCube-190704A (https://gcn.gsfc.nasa.gov/gcn3/24981.gcn3) in a time\nrange of 2 days centered on the alert event time (2019-07-03 18:48:52.25 UTC to 2019-07-05 18:48:52.25 UTC) during which IceCube was collecting good quality data. Excluding the\nevent that prompted the alert, one additional track-like event is found in spatial coincidence\nwith the 90% point spread function containment of IceCube-190704A. We find that these data are well described\nby atmospheric background expectations, with a p-value of 1.0. Accordingly, these data would\nrepresent a time-integrated muon-neutrino flux upper limit at the alert position assuming an E^-2 spectrum (E^2\ndN/dE) at the 90% CL of 5.1 x 10^-5 TeV cm^-2 for this observation period. 90% of events\nIceCube would detect from a source at this declination with an E^-2 spectrum are\napproximately between 1 TeV and 1 PeV.\n\nA subsequent search was performed to include the previous month of data (2019-06-04 18:48:52.25 UTC to 2019-07-05 18:48:52.25 UTC). In this case, we report a p-value of 1.0,\nconsistent with no significant excess of track-like events, and a corresponding time-integrated\nmuon-neutrino flux upper limit assuming an E^-2 spectrum (E^2 dN/dE) of\n 1.4 x 10^-4 TeV cm^-2 at the 90% CL.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu<mailto:roc@icecube.wisc.edu>.",
  "circularId": 24988,
  "createdOn": 1562362780000,
  "email": "pizzuto@wisc.edu",
  "subject": "IceCube-190704A: Upper limits from a search for additional neutrino events in IceCube",
  "submitter": "Alex Pizzuto at ICECUBE/U of Wisconsin  <pizzuto@wisc.edu>",
  "eventId": "IceCube-190704A"
}