Coordinated balloon-satellite studies of energetic electron precipitation mechanisms

Details Coordinated balloon-satellite studies of energetic electron precipitation mechanisms Coordinated balloon-satellite studies of energetic electron precipitation mechanisms

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..305k&link_type=abstract

In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 305-308 (SEE N85-24544 14-46)

Computer Science

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Balloon Sounding, Electron Precipitation, Geos 2 Satellite, Magnetic Storms, Magnetospheric Electron Density, Electron Acceleration, Electron Distribution, Electron Scattering, Geomagnetic Tail, Magnetic Field Configurations, Whistlers

Scientific paper

Energetic electron precipitation was observed via X-ray measurements from three simultaneously flown balloons in a region conjugate to the location of the geosynchronous satellite GEOS 2. Data from the satellite particle, wave, and field experiments were used to study magnetospheric processes that act on the equatorial electron distribution during precipitation events. Most of the electron precipitation during a substorm was due to the interaction of electrons with whistler mode electromagnetic waves. Electron scattering in regions of excessive field line curvature and acceleration along the field lines were more important before and at substorm onset, respectively. The precipitation can be explained as the consequence of a change of the geomagnetic field configuration in the tail, followed by the arrival of two injection fronts behind which hot unstably distributed plasma sheet electrons were convected to the geosynchronous orbit.

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