Effects of potential distribution along field lines on field-aligned current density

Details Effects of potential distribution along field lines on field-aligned current density Effects of potential distribution along field lines on field-aligned current density

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....9011083y&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Nov. 1, 1985, p. 11,083-11,086.

Physics

7

Alignment, Auroral Zones, Current Density, Earth Magnetosphere, Field Aligned Currents, Geomagnetism, Ionospheric Currents, Collisionless Plasmas, Electron Energy, Electron Mass, Magnetic Fields

Scientific paper

Effects of potential distribution along auroral field lines on the field-aligned current density are examined for a specific type of field-aligned potential distribution excluded by the Knight-Fridman-Lemaire (KFL) formula. It is shown that the field-aligned current density can be significantly reduced from the current density originally estimated by the KFL formula if the potential drop is concentrated at low altitudes (4000 km). This result can provide a possible explanation for the observed field-aligned current pattern across the discrete auroral forms.

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