Excitation of whistler waves by reflected auroral electrons

Details Excitation of whistler waves by reflected auroral electrons Excitation of whistler waves by reflected auroral electrons

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31..499w&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 31, May 1983, p. 499-507. Research supported by the Conselho Nacional de Dese

Mathematics

Logic

21

Auroral Zones, Cyclotron Radiation, Electron Distribution, Ionospheric Electron Density, Wave Excitation, Whistlers, Electron Energy, Electron Precipitation, Geomagnetism, Kilometric Waves, Magnetohydrodynamic Stability, Propagation Modes, Radio Auroras, Wave Dispersion

Scientific paper

Excitation of electron waves and whistlers by reflected auroral electrons which possess a loss-cone distribution is investigated. Based on a given magnetic field and density model, the instability problem is studied over a broad region along the auroral field lines. This region covers altitudes ranging from one quarter of an earth radius to five earth radii. It is found that the growth rate is significant only in the region of low altitude, say below the source region of the auroral kilometric radiation. In the high altitude region the instability is insignificant either because of low refractive indices or because of small loss cone angles.

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