Institut national de recherche scientifique français Univerité Pierre et Marie Curie Université Paris Diderot - Paris 7

Propagation of Solar Energetic Particles in 3D MHD Simulations of the Solar Wind

lundi 27 mai 2024, par Ahmed Houeibib (LESIA)

Mercredi 12 juin 2024 à 11h00 , Lieu : Salle de conférence du bâtiment 17

We propagate relativistic test particles in the field of a steady three-dimensional MHD simulation of the solar wind. We use the MPI-AMRVAC code for the wind simulations and integrate the relativistic guiding center equations using a new third-order accurate time integration scheme to solve the particle trajectories. Diffusion in velocity space, given a particle-turbulence mean free path λ∥ along the magnetic field, is also included. Preliminary results for 81 keV electrons injected at 0.139 AU heliocentric distance and mean free path λ∥ =0.5 AU are reported. Pitch angle distribution are in a good qualitative agreement with measurements at 1 AU. For these electrons, an energy loss of roughly 10 % is observed, quasi-exclusively due to the curvature of the magnetic field.