Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 103: Cosmic rays IV

T 103.8: Talk

Friday, April 3, 2020, 12:45–13:00, L-3.002

Fitting cosmic ray charges to cluster in accordance with an extragalactic source model — •Teresa Bister, Martin Erdmann, and Marcus Wirtz — III. Physikalisches Institut A, RWTH Aachen University

One of the main aims of astroparticle physics nowadays is to identify the sources of ultrahigh energy cosmic rays. This quest is particularly challenging as it requires knowledge of the galactic magnetic field as well as information about each cosmic ray's individual energy and charge. The latter cannot be measured directly at the highest energies by air shower experiments. Therefore this analysis presents a novel approach to fit all individual charges simultaneously by deep learning techniques. The fit uses different origin models as well as measurements of the energy and the shower depth in the atmosphere. The expected sensitivity is evaluated on simulated astrophysical scenarios and it is verified that this technique can differentiate between isotropic scenarios and cosmic rays originating in starburst galaxies.