3-D Global Simulation of Energetic Particle Transport with Combined Hybrid and CIMI Models

We use the combined Auburn 3-D global hybrid simulation code (ANGIE3D) and Comprehensive Inner Magnetosphere/Ionosphere (CIMI) model to investigate the dynamic coupling between the magnetotail plasma sheet and the inner magnetosphere. The 3-D global hybrid solves fully kinetic equations governing the ions and a fluid model for electrons in the self-consistent electromagnetic field of the dayside and night side outer magnetosphere and provides the CIMI model with field data in CIMI 3D domain and particle data at its boundary. The transport in the inner magnetosphere is calculated by the CIMI model. In the simulation, magnetic flux ropes and bubbles are generated due to reconnection in the tail, with strong ion temperature anisotropy and non-Maxwellian distributions, providing localized and time-dependent injection sources to the inner magnetosphere. By following the dynamic evolution of the equatorial electric potential, particle flux, and pressure anisotropy in the inner magnetosphere in response to the ion injection, the electromagnetic impacts of the tail fast flows and the associated energetic particle transport to the ring current and the radiation belt are illustrated. Effects of the anisotropic ion injection are shown. The present computation is based on the one-way coupling from the hybrid to CIMI model.