Forskning ved Københavns Universitet - Københavns Universitet


Search for high-energy muon neutrinos from the "naked-eye" GRB 080319B with the IceCube neutrino telescope

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We report on a search with the IceCube detector for high-energy muon neutrinos from GRB 080319B, one of the brightest gamma-ray bursts (GRBs) ever observed. The fireball model predicts that a mean of 0.1 events should be detected by IceCube for a bulk Lorentz boost of the jet of 300. In both the direct on-time window of 66 s and an extended window of about 300 s around the GRB, no excess was found above background. The 90% CL upper limit on the number of track-like events from the GRB is 2.7, corresponding to a muon neutrino fluence limit of 9.5x10^-3 erg cm^-2 in the energy range between 120 TeV and 2.2 PeV, which contains 90% of the expected events.
TidsskriftAstrophysical Journal
Udgave nummer2
StatusUdgivet - 2 jul. 2009

ID: 98038284