Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 24: Neutrinoastronomie II

T 24.6: Talk

Tuesday, March 20, 2018, 17:45–18:00, Philo-HS1

New results from the search for steady point-like sources of astrophysical neutrinos with IceCube — •René Reimann, Christian Haack, Lisa Schumacher, Jöran Stettner, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen University

IceCube, a cubic-kilometer sized neutrino detector at the geographic South Pole, is measuring a flux of high-energy astrophysical neutrinos. However, their sources have not been identified yet. We present the results of a search for steady point-like sources based on an eight year sample of up-going muon-neutrinos optimized for good pointing and low background contamination. The signature of point-like sources is clustering of observed arrival directions with respect to the background from atmospheric neutrinos. To improve the sensitivity, the likelihood approach has been optimized on the properties of the measured astrophysical muon-neutrino flux. The analysis includes an all-sky search, testing a pre-defined source catalog and a search for a population of weak sources.