Computer Science – Sound
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..551l&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 32, May 1984, p. 551-559. Research supported by the Southwest Research Instit
Computer Science
Sound
4
Energetic Particles, Flux Quantization, Geomagnetic Micropulsations, Magnetospheric Instability, Satellite Sounding, Electrons, Explorer 41 Satellite, Oscillations, Radial Distribution
Scientific paper
An observation of the radial profile of a Pc5 magnetic pulsation and the associated energetic electron flux oscillations from 10 to 18 Re, recorded by the IMP-5 satellite at 19.00 M.L.T. on 21 March 1970, is reported. The Pc5 pulsation was mainly compressional and ocurred during extremely quiet geomagnetic conditions. Fluxes of energetic electrons detected above three energy thresholds (18, 45, and 80 keV) were found to oscillate out of phase with magnetic field intensity. One new result is that both the wave amplitude and the wave period increased with radial distance. Second, the electron flux oscillatioin amplitude was roughly proportional to magnetic field fluctuation amplitude and wave period. The wave event is found to be interpreted better as an ion drift wave because of lack of polarization reversal. The characteristics of energetic electron flux oscillations are shown to agree qualitatively with theoretical calculations of the kinetic perturbation of distribution functions by compressional waves.
Lin Chang-Shou
Meng Ching I.
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