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T: Fachverband Teilchenphysik
T 93: Neutrinoastronomie II
T 93.9: Talk
Tuesday, March 29, 2011, 18:45–19:00, 30.41: 105
Neutrino flare search from point sources with the 79-string IceCube Detector — Dariusz Gora1,2, Jose Bazo1, Robert Franke1, Robert Lauer1, Elisa Bernardini1, and •Angel Cruz1 — 1DESY, 15738 Zeuthen — 2Institute of Nuclear Physics PAN, ul. Radzikowskiego 152,31-342 Cracow,Poland
In the search of point sources of extragalactic neutrinos, it has been shown that if these sources are flaring, like their gamma-ray counterparts, their detection probability is enhanced by time-dependent analyzes when compared with a time-integrated one. We present two kinds of searches for neutrino flares based on maximum likelihood methods: one looking for correlations with multi-wavelength observations (triggered analysis) and another looking independently for neutrino flares over time-scales that are not fixed a-priori (untriggered analysis). These analyzes are applied to recent flares of known sources using data from the 79-string IceCube configuration (Online Level 2 filter data). The most stringent upper limits on the neutrino flux are derived.