SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 144: Cosmic Ray VII

T 144.6: Vortrag

Donnerstag, 23. März 2023, 18:45–19:00, POT/0013

Diffuse Emission of Galactic High-Energy Neutrinos from a Global Fit of Cosmic Rays — •Georg Schwefer1,2,3, Philipp Mertsch2, and Christopher Wiebusch31Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Deutschland — 2Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University, 52056 Aachen, Deutschland — 3III. Physikalisches Institut B, RWTH Aachen University, 52056 Aachen, Deutschland

In the standard picture of galactic cosmic rays, a diffuse flux of high-energy gamma-rays and neutrinos is produced from inelastic collisions of cosmic ray nuclei with the interstellar gas. The neutrino flux is a guaranteed signal for high-energy neutrino observatories such as IceCube, but has not been found yet. Experimental searches for this flux constitute an important test of the standard picture of galactic cosmic rays. Both the observation and non-observation would allow important implications for the physics of cosmic ray acceleration and transport. In this talk, we present CRINGE, a new model of galactic diffuse high-energy gamma-rays and neutrinos, fitted to recent cosmic ray data from AMS-02, DAMPE, IceTop as well as KASCADE. We also discuss the uncertainties for the predicted emission from the cosmic ray model as well as from the choice of source distribution, gas maps and cross-sections and consider the possibility of a contribution from unresolved sources.

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