CRPropa 3.2: a framework for high-energy astroparticle propagation

Rafael Alves Batista, Julia Becker Tjus, Julien Dörner, Andrej Dundovic, Björn Eichmann, Antonius Frie, Christopher Heiter, Mario R. Hoerbe, Karl Heinz Kampert, Lukas Merten, Gero Müller, Patrick Reichherzer, Andrey Saveliev, Leander Schlegel, Günter Sigl, Arjen van Vliet, Tobias Winchen

Research output: Contribution to journalConference articlepeer-review


The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, in large part owing to the inflow of high-quality data collected by present 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 new version represents a step further towards a more complete simulation framework for multimessenger studies. Some of the new developments include: cosmic-ray acceleration, support for particle interactions within astrophysical sources, full Monte Carlo treatment of electromagnetic cascades, improved ensemble-averaged Galactic propagation, and a number of technical enhancements. Here we present some of these novel features and some applications to gamma- and cosmic-ray propagation.

Original languageBritish English
Article number978
JournalProceedings of Science
StatePublished - 18 Mar 2022
Event37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany
Duration: 12 Jul 202123 Jul 2021


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