Formation of periodic auroral structures

Details Formation of periodic auroral structures Formation of periodic auroral structures

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ge%26ae..31..388k&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 31, Mar.-Apr. 1991, p. 388-390. In Russian.

Physics

1

Auroral Zones, Electron Flux Density, Electron Precipitation, Periodic Variations, Electron Scattering, Energy Dissipation, Particle Collisions, Relativistic Electron Beams

Scientific paper

It is suggested that the layering of the flux of electrons precipitating into the atmosphere into small-scale forms (rays, sheets, etc.) might be the result of the development of a filamentation (aperiodic) instability. In both its nature and its external form the auroral ray structure is analogous to the filamentation pattern of relativistic electron beams observed in laboratory experiments. The instability has a dissipative nature and requires collisions of the precipitating electrons with the ambient medium.

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