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CRPropa 3.2 — an advanced framework for high-energy particle propagation in extragalactic and galactic spaces

2022; Institute of Physics; Volume: 2022; Issue: 09 Linguagem: Inglês

10.1088/1475-7516/2022/09/035

1475-7516

Rafael Alves Batista, J. Becker Tjus, Julien Dörner, A. Dundovic, Björn Eichmann, Antonius Frie, Christopher Heiter, Mario R. Hoerbe, K.‐H. Kampert, Lukas Merten, Gero Müller, Patrick Reichherzer, Andrey Saveliev, Leander Schlegel, G. Sigl, A. van Vliet, T. Winchen,

Radio Astronomy Observations and Technology

Abstract The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, largely due to the inflow of data collected by large-scale cosmic-ray, gamma-ray, and neutrino observatories. At the dawn of the multimessenger era, the interpretation of these observations within a consistent framework is important to elucidate the open questions in this field. CRPropa 3.2 is a Monte Carlo code for simulating the propagation of high-energy particles in the Universe. This version represents a major leap forward, significantly expanding the simulation framework and opening up the possibility for many more astrophysical applications. This includes, among others: efficient simulation of high-energy particles in diffusion-dominated domains, self-consistent and fast modelling of electromagnetic cascades with an extended set of channels for photon production, and studies of cosmic-ray diffusion tensors based on updated coherent and turbulent magnetic-field models. Furthermore, several technical updates and improvements are introduced with the new version, such as: enhanced interpolation, targeted emission of sources, and a new propagation algorithm (Boris push). The detailed description of all novel features is accompanied by a discussion and a selected number of example applications.