Physics
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.1327l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Feb. 1, 1989, p. 1327-1337.
Physics
11
Auroral Zones, Electron Beams, Ion Cyclotron Radiation, Plasma-Particle Interactions, Wave Excitation, Distribution Functions, Dynamics Explorer 1 Satellite, Electron Distribution
Scientific paper
The electron distribution functions measured by the Dynamics Explorer 1 satellite during an auroral pass in 1981 are used in a linear instability analysis of low-frequency electromagnetic and electrostatic waves near and below the hydrogen gyrofrequency. It is suggested that the low-frequency electric and magnetic noise in the auroral zone might be explained by O and H electromagnetic ion cyclotron waves excited by energetic electron beams. An instability analysis suggests that upward and downward streaming electrons throughout the central plasma sheet region provide the free energy for heating oxygen ion through oxygen electrostatic ion cyclotron waves.
Burch James. L.
Koga James
Lin Chang-Shou
Wong Hung K.
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