Physics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94..492m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Jan. 1, 1989, p. 492-496. Research supported by the Southwest Researc
Physics
5
Auroral Zones, Electron Energy, Electrostatic Waves, Plasma Layers, Two Dimensional Models, Electron Beams, Electron Plasma, Night Sky, Plasma Frequencies
Scientific paper
The role of oblique double layers in the generation of ion conical distributions has been discussed by Borovsky (1984). This analysis is extended to the investigation of possible electron heating processes. Plasma simulations of oblique double layers with parameters characteristic of the midaltitude nightside auroral zone were performed. The double layers are observed to generate electron beams which, in turn, excite electrostatic waves with frequencies less than the local plasma frequency (strongly magnetized Langmuir waves). These beam-driven electrostatic waves heat the ambient electrons primarily in the parallel direction. The electrostatic waves may be responsible for thermalizing the distributions of energetic electrons that produce auroral arcs.
Borowsky Joseph E.
Menietti Douglas J.
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