Other
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991angeo...9..540k&link_type=abstract
Annales Geophysicae (ISSN 0939-4176), vol. 9, Aug. 1991, p. 540-545.
Other
4
Airglow, Auroral Arcs, Electromagnetic Radiation, Ion Cyclotron Radiation, Plasmasphere, Wave Generation, Approximation, Diurnal Variations, Electron Energy, Energy Absorption, Mathematical Models, Photoelectrons
Scientific paper
Excitation of airglow at the wavelength of 630 nm in the SAR-arcs region, due to absorption of the energy of electromagnetic ion-cyclotron (EMIC) waves generated in the outer plasmasphere is considered. With the use of the quasi-linear approximation for the collisionless heating of electrons by EMIC waves and averaged intensities of measured wave spectra, distributions of the volume emission rate of the atmosphere for daytime and nighttime conditions are computed. It is shown that two maxima can be formed in the altitude profile of volume emission rate. The lower one is stimulated by photoelectrons, the upper one by thermal electrons heated to high temperatures due to the dissipation energy of EMIC waves propagating from plasmasphere. During transfer to nighttime conditions the lower maximum disappears. Integral airglow intensities are found. The results obtained are different from those of other authors because of the less constrained approach used here.
Konikov Iu. V.
Pavlov A. V.
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