Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 59: Neutrino astronomy II

T 59.1: Vortrag

Mittwoch, 1. April 2020, 16:30–16:45, L-2.004

Search for high-energetic neutrino sources — •Martina Karl1,2, Anna Schubert2, Theo Glauch2,3, Paolo Giommi3,4,5, Elisa Resconi1,2, Paolo Padovani6,7, Andrea Turcati2, and Yu-Ling Chang5,81Max-Planck-Institut für Physik, München, Germany — 2Technische Universität München, Germany — 3Institute for Advanced Study, Technische Universität München, Germany — 4Associated to Agenzia Spaziale Italiana, Roma, Italy — 5ICRANet, Pescara, Italy — 6European Southern Observatory, Garching, Germany — 7Associated to INAF - Osservatorio Astronomico di Roma, Monteporzio Catone, Italy — 8Tsung-Dao Lee Institute, Shanghai, China

IceCube is a cubic-kilometer scale neutrino detector instrumenting a gigaton of ice at the geographic South Pole in Antarctica. On average, 8 track-like high energetic neutrino events with a high probability of being of astrophysical origin are detected per year. The bright appearance of these events in the detector allows for a good pointing to their origin. We present several searches for the production sites of these cosmic neutrinos. The first analysis uses IceCube's high-statistics, neutrino-induced through-going muon samples to search for sources specifically in the vicinity of the arrival directions of the single most high-energetic events. Complementary, we also present a multi-wavelength search for the counterparts of the high-energy tracks. As a result we find that there is a 3 sigma over-fluctuation of HBL/IBL Blazars. Which makes them one of the most promising candidates for a fraction of the astrophysical neutrino flux.

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