Implications of turbulence-dependent diffusion on cosmic-ray spectra
High Energy Astrophysical Phenomena
2021-10-14 v1
Abstract
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.
Cite
@article{arxiv.2110.06676,
title = {Implications of turbulence-dependent diffusion on cosmic-ray spectra},
author = {J. Dörner and P. Reichherzer and L. Merten and J. Becker Tjus and H. Fichtner and M. J. Pueschel and E. G. Zweibel},
journal= {arXiv preprint arXiv:2110.06676},
year = {2021}
}
Comments
6 pages, 4 figures