Speaker
Description
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. Furthermore, the modular structure and the possibility of including custom plugins enables the user to study specific scenarios, including those with physics beyond the Standard Model, such as Lorentz Invariance Violation and magnetic monopoles. Together, these improvements establish CRPropa 3.3 as a comprehensive tool for modelling the propagation of multimessengers in structured, time-dependent environments.
