Efficient charged particle propagation methods

Abstract

In astrophysics, the search for sources of the highest-energy cosmic rays continues. For further progress, not only ever better observatories but also ever more realistic numerical simulations are needed. We compare different approaches for numerical test simulations of UHECRs in the IGMF and show that all methods provide correct statistical propagation characteristics of the particles in means of their diffusive behaviour. Through convergence tests, we show that the necessary requirements for the methods differ and ultimately reveal significant differences in the required simulation time.

Submitted to the Proceedings of the 20th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2021)

References in corpus (5)

• The Gamma-Ray Window to Intergalactic Magnetism
• Regimes of cosmic-ray diffusion in Galactic turbulence
• The Diffusion Approximation vs. the Telegraph Equation for Modeling Solar Energetic Particle Transport with Adiabatic Focusing. I. Isotropic Pitch-angle Scattering
• Application of the three-dimensional telegraph equation to cosmic-ray transport
• Anisotropic cosmic-ray diffusion in isotropic Kolmogorov turbulence