CRPropa is a Monte Carlo framework for simulating the propagation of (ultra-) high-energy particles in the Universe, including cosmic rays, gamma rays, electrons, and neutrinos. It covers energies from ZeV down to GeV for gamma rays and electrons, and TeV for cosmic rays and neutrinos, supporting various astrophysical environments such as the surroundings of astrophysical sources, galactic, and extragalactic environments. The newest version, CRPropa 3.2, represents a significant leap forward towards a universal multi-messenger framework, opening up the possibility for many more astrophysical applications. This includes extensions to simulate cosmic-ray acceleration and particle interactions within astrophysical source environments, a full Monte Carlo treatment of electromagnetic cascades, improved ensemble-averaged Galactic propagation, significant performance improvements for cosmic-ray tracking through magnetic fields, and a user-friendly implementation of custom photon fields, among many more enhancements. This contribution will give an overview of the new features and present several applications to cosmic-ray and gamma-ray propagation.
Cite
@article{arxiv.2308.09532,
title = {CRPropa 3.2: a public framework for high-energy astroparticle simulations},
author = {Sophie Aerdker and Rafael Alves Batista and Julia Becker Tjus and Julien Dörner and Andrej Dundovic and Björn Eichmann and Antonius Frie and Christopher Heiter and Mario Hoerbe and Karl-Heinz Kampert and Lukas Merten and Gero Müller and Patrick Reichherzer and Simone Rossoni and Andrey Saveliev and Leander Schlegel and Günter Sigl and Arjen van Vliet and Tobias Winchen},
journal= {arXiv preprint arXiv:2308.09532},
year = {2023}
}