Relativistic electron drift shell splitting

Details Relativistic electron drift shell splitting Relativistic electron drift shell splitting

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1265s&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A9, pp. SMP 27-1, CiteID 1265, DOI 10.1029/2001JA009179

Physics

10

Magnetospheric Physics: Numerical Modeling, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: General Or Miscellaneous, Magnetospheric Physics: Energetic Particles, Trapped

Scientific paper

A survey of equatorial outer radiation belt relativistic electron pitch angle distributions measured on the Polar satellite shows anisotropies that are consistent with the effects of drift shell splitting. Simulations based on the observed radial intensity gradients and on drift shell calculations in a magnetospheric field model show that for low geomagnetic activity levels, the measured average anisotropies are similar to those predicted. With increasing geomagnetic activity the anisotropies do not change as much as is predicted, particularly on the nightside where the pitch angle distributions have local minima in the direction perpendicular to the magnetic field. At a given location and activity level there is substantial variability in the measured anisotropies about their long-term averages.

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