Are equatorial electron cyclotron waves responsible for diffuse auroral electron precipitation?

Details Are equatorial electron cyclotron waves responsible for diffuse auroral electron precipitation? Are equatorial electron cyclotron waves responsible for diffuse auroral electron precipitation?

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.9163b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Nov. 1, 1983, p. 9163-9170.

Statistics

48

Auroral Zones, Cyclotron Radiation, Electron Precipitation, Electron Radiation, Satellite Observation, Current Sheets, Electron Diffusion, Equatorial Atmosphere, Field Aligned Currents, Goes 2, Plasma Diffusion, Statistical Analysis

Scientific paper

Electrostatic wave amplitude statistics based on the GEOS 2 data for the nightside plasma sheet are presented, and the wave amplitude variation with latitude in the magnetic equator region is discussed. Theoretical calculations similar to those of Lyon (1974) are then performed, with allowance made for the wave confinement within a few degrees of latitude from the magnetic equator. An analytical expression is derived for the minimum wave amplitude required to cause strong pitch angle diffusion for plasma sheet electrons. By comparing analytical results with statistical data, it is shown that the equatorial electron waves are not the only cause of diffuse electron precipitation and that other mechanisms (e.g., field-aligned currents) could play an important role.

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