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EP: Fachverband Extraterrestrische Physik
EP 5: Sun and heliosphere I
EP 5.1: Invited Talk
Wednesday, March 22, 2023, 10:45–11:15, ZEU/0160
New Insights in Simulations of SEP Events with the PARADISE+ICARUS Model — •Edin Husidic1,2, Nicolas Wijsen1,3,4, Tinatin Baratashvili1, Stefaan Poedts1,5, and Rami Vainio2 — 1KU Leuven, Belgium — 2University of Turku, Finland — 3NASA, Goddard Space Flight Center, Greenbelt, USA — 4University of Maryland, USA — 5University of Maria Curie-Skłodowska, Lublin, Poland
The study of solar energetic particle (SEP) events plays a particularly important role in space weather research. While propagating through interplanetary space, fast coronal mass ejections (CMEs) generate shock waves that can efficiently accelerate ions and protons to energies of deka-MeV and beyond, posing a significant threat to astronauts and spacecraft. It is thus of major concern to develop numerical simulations that can realistically model the acceleration and transport of SEPs. We present simulations of SEP events in the inner heliosphere with the novel PARADISE+ICARUS model. The MPI-AMRVAC-based ICARUS code generates realistic background solar wind configurations from 0.1 au onward that serve as input for PARADISE (PArticle Radiation Asset Directed at Interplanetary Space Exploration). By solving the focused transport equation in a stochastic manner, PARADISE obtains intensities of SEP distributions. Using ICARUS’s ability of adaptive mesh refinement (AMR) allows us to increase the spatial resolution at interplanetary shock waves and investigate how simulation results are affected by it. Our results are compared to previous ones obtained by the AMR-lacking PARADISE+EUHFORIA model.