Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 83: Cosmic rays 6

T 83.8: Talk

Thursday, March 7, 2024, 17:45–18:00, Geb. 20.30: 2.059

Modelling hadronic interactions of Galactic Cosmic rays in Giant Local Molecular Clouds with CRPropa^* — •Julien Dörner^1,2, Leonel Morejon^2,3, Julia Becker Tjus^1,2,4, and Karl-Heinz Kampert^2,3 — ¹Theoretical Physics IV, Plasma Astroparticle Physics, Faculty for Physics and Astronomy, Ruhr University Bochum, 44780 Bochum, Germany — ²Ruhr Astroparticle and Plasma Physics Center (RAPP Center), Germany — ³Bergische Universität Wuppertal, Department of PhysicsGaußstraße 20, 42103 Wuppertal, Germany — ⁴Department of Space, Earth and Environment, Chalmers University of Technology, 412 96 Gothenburg, Sweden

For Galactic Cosmic rays (GCRs) the hadronic interaction with the ambient gas are the most relevant energy loss channel. These interactions produce gamma-rays in the very high energy band as well as neutrinos, electrons and positrons. One tracer of the interactions of the GCRs of the local interstellar spectrum are gamma-ray observations of local giant molecular clouds (GMCs).

In this talk the implementation of hadronic interactions for primary protons on a proton target, based on different parametrisations of the production cross-section, is presented. We apply different interaction models to simulate the interactions of GCRs with the GMC Rho-Oph. The results of the parametrised models are compared to directly interfaced event generators and current observations.
^* Financial support by the DFG (SFB 1941) is gratefully acknowledged

Keywords: Giant Molecular Clouds; Pion Decay; Gamma-rays; Diffused Cosmic Ray