期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 9, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2022/09/035
关键词
cosmic ray theory; ultra high energy cosmic rays; ultra high energy photons and neutrinos; gamma ray theory
资金
- European Union [I 4144-N27, 100010434]
- Radboud Excellence Initiative
- Austrian Science Fund (FWF) [847648]
- Deutsche Forschungsgemeinschaft (DFG) [22-11-00063]
- Multi-messenger probe of Cosmic Ray Origins (MICRO) [LCF/BQ/PI21/11830030, 05A20PX1]
- Russian Science Foundation [05A20GU2]
- BMBF Verbundforschung [SFB1491, TJ 62/8-1]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC 2121, 390833306]
- European Research Council (ERC) under the European Union [646623]
- German Academic Exchange Service
- la Caixa Foundation
- RUB Research School
- [KA 710/5-1]
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. CRPropa 3.2, a Monte Carlo code, represents a major leap forward in simulating the propagation of high-energy particles in the Universe, with expanded capabilities and improved technical features.
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.
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