Greifswald 2024 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 7: Sun and Heliosphere II
EP 7.9: Vortrag
Donnerstag, 29. Februar 2024, 16:30–16:45, ELP 6: HS 2
Energetic particle transport modelling with PARADISE — •Edin Husidic1,2, Nicolas Wijsen1, Stefaan Poedts1,3, and Rami Vainio2 — 1Centre for mathematical Plasma Astrophysics, KU Leuven, Leuven, Belgium — 2Department of Physics and Astronomy, University of Turku, Turku, Finland — 3Institute of Physics, University of Maria Curie-Skłodowska, Lublin, Poland
Solar energetic particles (SEPs) constitute high-energy charged particles originating from solar eruptive phenomena. In particular, protons with energies ranging from tens of MeV to a few GeV per nucleon, pose a significant threat to satellites and astronauts. The intensities of SEPs are substantially influenced by the large-scale solar wind configuration, incorporating structures like coronal mass ejections (CMEs) or stream interaction regions (SIRs), which perturb the interplanetary (IP) magnetic field and ultimately affect the transport of SEPs. Despite decades of research, the precise acceleration mechanisms remain not fully known. Numerical models capable of simulating SEP events have proven to be valuable tools in the study of the transport and acceleration of SEPs. Here, we share recent findings derived with the energetic particle transport code PARADISE. The code utilises realistic background solar wind configurations as input, derived from magnetohydrodynamic (MHD) models such as EUHFORIA or the Icarus test case of the MPI-AMRVAC framework. By employing a stochastic approach to solve the focused transport equation, PARADISE obtains SEP intensities in the inner heliosphere. The presented studies focus on particle acceleration at IP shocks associated with CMEs and SIRs.
Keywords: solar energetic particles; particle transport; interplanetary shocks; modelling