PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T01: Astroparticle and Gravitational Waves
Implications of turbulence dependent diffusion on cosmic ray spectra
J. Dörner*, P. Reichherzer, L. Merten, J. Becker Tjus, H. Fichtner, M.J. Pueschel and E.G. Zweibel
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Pre-published on: February 10, 2022
Published on: May 12, 2022
The propagation of cosmic rays can be described as a diffusive motion in most galactic environments. High-energy gamma-rays measured by Fermi have allowed inference of a gradient in the cosmic-ray density and spectral energy behavior in the Milky Way, which is not predicted by models. Here, a turbulence-dependent diffusion model is used to probe different types of cosmic-ray diffusion tensors. Crucially, it is demonstrated that the observed gradients can be explained through turbulence-dependent energy-scaling of the diffusion tensor.
DOI: https://doi.org/10.22323/1.398.0090
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