Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm54a..05r&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM54A-05
Physics
[2716] Magnetospheric Physics / Energetic Particles: Precipitating, [2720] Magnetospheric Physics / Energetic Particles: Trapped, [2788] Magnetospheric Physics / Magnetic Storms And Substorms, [7959] Space Weather / Models
Scientific paper
Physics based models allow the modeling of differential fluxes of Solar Energetic Particles (SEPs) during magnetic storms. The approach uses a combination of MHD simulations driven by the solar wind and interplanetary magnetic field (IMF) upstream of the magnetosphere and particle tracing calculations in the time dependent electric and magnetic fields from the MHD simulations. Both the MHD simulations and the particle results use measurements by spacecraft upstream of the magnetosphere. The results of these calculations can be used to compute differential particle fluxes that can be compared to spacecraft observations in the inner magnetosphere. We show that the simulation can reproduce observations of energetic ions at synchronous orbit during periods of high SEP flux and thus allow us to identify the underlying physical processes involved.
Ashour-Abdalla Maha
El-Alaoui Mostafa
Richard Robert L.
Walker Ray J.
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