{
  "bibcode": "2009GCN..8883....1K",
  "body": "Alexander Kappes for the IceCube collaboration (http://www.icecube.wisc.edu \n) reports:\n\nIceCube is a 1 km^3 neutrino telescope located at the geographic South  \nPole sensitive to neutrinos above ~100 GeV. We used the data from  \nIceCube in its 9-string configuration to search for high-energy muon  \nneutrinos from the position of GRB 080319B (Racusin et al., GCN 7427)  \nusing an unbinned likelihood method. The search was performed in a  \nnarrow time window of 66 s (T_0 - 3.8s to T_0 + 62.2s) corresponding  \nto the observed prompt gamma-ray emission, and in a wider window of  \nabout 5 minutes (T_0 - 173s to T_0 + 130 s).\n\nWe do not find any indications for a deviation from the background- \nonly hypothesis in either of the two time windows. Therefore, we use  \nthe null result from the prompt window to place an upper limit (90%  \nC.L.) on the prompt muon neutrino flux from GRB 080319B of 9.0e-3 erg  \ncm^-2 in the energy range between 145 TeV and 2.1 PeV.\n\nA corresponding paper has been submitted to ApJ. The preprint version  \ncan be found at arXiv:0902.0131.",
  "circularId": 8883,
  "createdOn": 1233855719000,
  "email": "alexander.kappes@icecube.wisc.edu",
  "subject": "GRB 080319B: IceCube upper limit on high-energy neutrino flux",
  "submitter": "Alexander Kappes at UW-Madison/IceCube  <alexander.kappes@icecube.wisc.edu>",
  "eventId": "GRB 080319B"
}