Birkeland currents associated with optical aurora

Details Birkeland currents associated with optical aurora Birkeland currents associated with optical aurora

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..23.1653g&link_type=abstract

Advances in Space Research, Volume 23, Issue 10, p. 1653-1656.

Physics

1

Scientific paper

The location and magnitude of Birkeland currents associated with auroras were determined from an analysis of electron and magnetometer data from the Freja satellite during auroral overpasses in northern Saskatchewan. The upward field-aligned currents connected directly with the optical aurora. There were downward currents equatorward of the aurora in every case but for only 3 of 16 cases were there also poleward currents. The current carried by energetic electrons (.02 to 25 keV) accounted for only about 14 of the upward Birkeland current inferred, on average.

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