Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm11a1587k&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM11A-1587
Physics
2730 Magnetosphere: Inner, 2774 Radiation Belts, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
We examined the behavior of relativistic electron fluxes, measured with the GEOS-8 and GOES-10 satellites at geostationary orbit, for the period from 1995 through 2006. With the measured actual electron fluxes, we presented also the values of the electron fluxes computed from our recent model for relativistic electrons at geostationary orbit. The simulation results are very well consistent with the actual fluxes, and both show a strong dependence on solar activity: the relativistic electron fluxes on average tend to be significantly reduced near the solar maximum, though the solar wind parameters that may affect the relativistic electron population, were changed insignificantly. A possible cause for the decrease in relativistic electrons in the outer radiation belt during high solar activity may be a specific regime of the solar wind for these time intervals when the solar wind velocity and density show the fast short-periodic variations that prevent from the acceleration of electrons in the outer radiation belt to high energies.
Khazanov George V.
Kozyra Janet U.
Lyatsky Wladislav
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