SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 141: Neutrino Astronomy V

T 141.4: Vortrag

Donnerstag, 23. März 2023, 18:15–18:30, POT/0251

Seasonal Variations of the Atmospheric Neutrino Flux measured in IceCube — •Karolin Hymon and Tim Ruhe for the IceCube collaboration — Technische Universität Dortmund, Germany

The IceCube Neutrino Observatory measures high energy atmospheric neutrinos with high statistics. These atmospheric neutrinos are produced in cosmic ray interactions in the atmosphere, mainly by the decay of pions and kaons. The rate of the measured neutrinos is affected by seasonal temperature variations in the Stratosphere, which are expected to increase with the particle's energy. In this contribution, seasonal energy spectra are obtained using a novel spectrum unfolding approach, the Dortmund Spectrum Estimation Algorithm (DSEA+), in which the energy distribution is estimated from measured quantities with machine learning algorithms. The seasonal spectral difference to the annual average flux will be discussed based on preliminary results from IceCube's atmospheric muon neutrino data.