Work

CRPropa 3.3: Toward a Unified Multi-Messenger Framework from GeV to ZeV Energies

Year: 2025

Type: conference-paper

Abstract: We present CRPropa 3.3, the latest release of the publicly available Monte Carlo framework for simulating the propagation of high-energy particles in astrophysical environments. This version introduces significant extensions that enables multi-messenger studies across a broad energy range, from GeV to ZeV. New features include explicit time tracking, time-dependent advection fields, and support for position-dependent radiation backgrounds, for more realistic simulations of Galactic and extragalactic propagation. Nuclear cross sections have been updated and expanded up to lead (Z=82). We illustrate some of these new features, including acceleration at moving shocks and gamma-ray propagation in the interstellar radiation field. Together, these improvements establish CRPropa 3.3 as a comprehensive tool for modelling cosmic rays, gamma rays, and their secondaries in structured, time-dependent environments, setting the stage for next-generation multi-messenger astrophysics.

Source: International Cosmic Ray Conference

DOI: 10.22323/1.501.0964

Authors: Andrey Saveliev, Sophie Aerdker, Rafael Alves Batista, Julia Becker Tjus, Gaetano Di Marco, Julien Dörner, Karl-Heinz Kampert, Lukas Merten, Leonel Morejon, Gero Müller, Patrick Reichherzer, Leander Schlegel, Günter Sigl, Arjen van Vliet

Institutions: Ruhr University Bochum, Institut d'Astrophysique de Paris, Sorbonne Université, Laboratoire de Physique Nucléaire et de Hautes Énergies, University of Wuppertal, University of Oxford, Universität Hamburg, Khalifa University of Science and Technology

Language: English

Topic: Astrophysics and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Bundesministerium für Bildung und Forschung, Khalifa University of Science, Technology and Research

Awards: G1892388310, G338497233, G432818845, MultiMessenger Ansatz zur Suche nach den Quellen der kosmischen Strahlung, Verbundprojekt 05A2023 - AUGER: Das Pierre-Auger-Projekt: Erdgebundene Messung der kosmischen Strahlung höchster Energien bis über 10^20 eV. Teilprojekt 2., G6141822678, G702601109, G7080048889, EXC 2121: Quantum Universe, Verbundprojekt 05A2020 - AUGER: Das Pierre-Auger-Projekt:Messungen der kosmischen Energien von über 10^(20) eV. Teilprojekt 4, Verbundprojekt 05A2020 - AUGER: Das Pierre-Auger-Projekt: Messungen der kosmischen Energien von über 10^(20) eV. Teilprojekt 1

OpenAlex ID: W4414438222

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