Simulation of Radiation Belt Dynamics Driven by Solar Wind Variations

Author
Abstract
The rapid rise of relativistic electron fluxes inside geosynchronous orbit during the January 10-11, 1997, CME-driven magnetic cloud event has been simulated using a relativistic guiding center test particle code driven by out-put from a 3D global MHD simulation of the event. A comparison can be made of this event class, characterized by a moderate solar wind speed (< 600 km/s), and those commonly observed at the last solar maximum with a higher solar wind speed and shock accelerated solar energetic proton component. Relativistic electron flux increase occurred over several hours for the January event, during a period of prolonged southward IMF Bz more rapidly than the 1-2 day delay typical of flux increases driven by solar wind high speed stream interactions. Simulations of the January event captured the flux
Year of Publication
1999
Volume
109
Number of Pages
171-182
Publisher
American Geophysical Union
City
Washington, D. C.
URL
http://onlinelibrary.wiley.com/doi/10.1029/GM109p0171/summary
DOI
10.1029/GM10910.1029/GM109p0171