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Analysis of Field-Aligned Currents in the High-Altitude Nightside Auroral Region: Cluster Observation

Shin, Youra; Lee, Ensang; Lee, Jae-Jin

In this paper we present analysis of current density when the Cluster spacecraft pass the nightside auroral region at about 4-5 RE from the center of Earth. The analysis is made when the inter-spacecraft separation is within 200 km, which allows all four spacecraft to be situated inside the same current sheet. On 22 February 2002, two field-aligne…