Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm24a..07g&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM24A-07
Physics
[2720] Magnetospheric Physics / Energetic Particles: Trapped, [2753] Magnetospheric Physics / Numerical Modeling, [2774] Magnetospheric Physics / Radiation Belts, [2788] Magnetospheric Physics / Magnetic Storms And Substorms
Scientific paper
Recent observations by Akebono/RDM have shown several cases of >2.5 MeV radiation belt electron enhancements occuring on time scales of less than a few hours. These intervals are shorter than typical radial diffusion or wave-particle interactions can account for. We choose two so-called "rapid rebuilding'' events that occur during high speed streams (July 22, 2009 and September 4, 2008) and simulated them with the coupled BATSRUS-RBE model. We demonstrate that strong dipolarization events in the magnetospheric magnetic field result in strong radial transport and energization of radiation belt electrons. The modeled enhancment, time scales, and commencment time are shown to be consistent with Akebono/RDM observations.
Fok M. H.
Glocer A.
Nagai Takaya
Tóth Géza
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