Magnetospheric chorus emissions - A review

Details Magnetospheric chorus emissions - A review Magnetospheric chorus emissions - A review

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..681s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 5, May 1992, p. 681-697. Research supported by NERC.

Physics

96

Dawn Chorus, Earth Magnetosphere, Electron Energy, Energy Transfer, Hot Electrons, Whistlers, Electron Cyclotron Heating, Equatorial Regions, Ground Stations

Scientific paper

A review of chorus emissions observed on ground-based stations and in the earth's magnetosphere is presented. Different approaches to modeling these emissions are discussed. It is pointed out that the most likely energy source of chorus emissions lies in the anisotropic hot electrons in the equatorial magnetosphere. The energy of these electrons is transferred to waves via the electron cyclotron instability. Then the nonlinear deformation of the hot electron distribution function under the influence of these waves produces almost monochromatic wavelets which, in their turn, generate a chorus element in a manner similar to the generation of artificially stimulated emissions by ground-based transmitters.

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