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T: Fachverband Teilchenphysik

T 24: Neutrinoastronomie II

T 24.7: Talk

Tuesday, March 20, 2018, 18:00–18:15, Philo-HS1

Stacking point source search of a lower energy neutrino contribution at the HESE track positions using IceCube data — •Thorben Menne, Mathis Börner, Maximilian Meier, Tobias Hoinka, and Jan Soedingrekso for the IceCube collaboration — TU Dortmund

The IceCube detector is a cubic kilometer sized neutrino telescope located at the South Pole. One important goal is to observe neutrinos originating from a single or multiple sources in the sky. Despite the discovery of multiple neutrinos of astrophysical origin no significant source of these high energy events has been found yet. Also no significant clustering of lower energy neutrinos at a single point has been found in a all sky search with 7 years of IceCube data. Nevertheless recently found correlations between a high energy IceCube neutrino and a flaring Blazar makes correlation searches in different messenger particles and energies even more promising. This analysis aims to find a signal from lower energy neutrinos originating from the positions of high energy starting track events measured in IceCube which have possible astrophysical origin. A stacking approach is used to collectively search for multiple weak emissions from the proposed source class. Both a time dependent and steady flux scenario are investigated using multiple years of IceCube neutrino data.