The relationship between field-aligned current, carried by suprathermal electrons, and the auroral arc

Details The relationship between field-aligned current, carried by suprathermal electrons, and the auroral arc The relationship between field-aligned current, carried by suprathermal electrons, and the auroral arc

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4..407a&link_type=abstract

Geophysical Research Letters, vol. 4, Oct. 1977, p. 407-410.

Computer Science

Sound

4

Auroral Arcs, Electron Precipitation, Field Aligned Currents, Ionospheric Currents, Rocket Sounding, Electron Energy, Magnetic Fields

Scientific paper

Data from four auroral sounding rockets, which directly measured field-aligned currents with particle detectors, are presented. The largest fraction of the field-aligned current carried by electrons was (1) due to precipitating electrons of energy less than 1 keV; (2) located spatially at the edges of the auroral luminosity. A model is suggested in which these currents couple the ionosphere to the magnetosphere and produce the pre-breakup auroral arc.

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