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Published July 25, 1996 | Published
Book Section - Chapter Open

New Magnetospheric Results from the SAMPEX Mission

Abstract

Results are described from energetic particle detectors onboard the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) satellite. Electron data are shown for energies E>400 keV in the outer zone of electron trapping (L≳3). The processes by which electrons are accelerated to very high energies (E>1 MeV) are discussed. Data are sorted according to L‐values and are compared with concurrent solar wind and geomagnetic conditions. Data from SAMPEX are also compared to GOES and UARS measurements. It is found that high‐speed solar wind streams drive the acceleration and recirculation of electrons throughout the outer zone on time scales of one day (or less). Very high time resolution measurements from SAMPEX show the very sporadic nature of magnetosphere‐atmosphere coupling processes.

Additional Information

© 1996 American Institute of Physics. We thank the many individuals who have contributed so extensively to the success of SAMPEX. We especially thank G. Mason, M. Lennard, and D. Hamilton at the University of Maryland, E. Stone at Caltech, and R. Boughner at Langley Research Center for major contributions to this research. This work was supported at the U. of Colorado by NASA grant number NAG5-2681. The authors thank W. Imhof, A. Lazarus, and E. Gaines for data and useful discussions on this work.

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