An energetic particle perspective of the magnetopause

Details An energetic particle perspective of the magnetopause An energetic particle perspective of the magnetopause

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6385w&link_type=abstract

Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6385-6396.

Physics

8

Energetic Particles, Magnetopause, Particle Density (Concentration), Satellite Observation, Trapped Particles, Angular Distribution, Electron Density (Concentration), Geomagnetism, Graphs (Charts), International Sun Earth Explorers, Ion Density (Concentration)

Scientific paper

The present analysis deals with energetic (above 24 keV) particle data from the Isee satellites during a series of magnetopause crossings. The primary energetic particle data employed in the analysis are the three-dimensional distributions from the Isee A satellite. Correlative magnetic field measurements are used to relate the particle behavior to magnetic field characteristics at and earthward of the magnetopause. It is shown that, to first order, the magnetopause may be regarded as a perfectly absorbing boundary for the trapped energetic particles, that it is nearly always in motion, and that boundary waves are often present. The observed dayside magnetopause motion is consistent with a large-scale radial motion having an approximately 10-min period plus superimposed boundary waves with a 90- to 150-sec period.

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