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Electric potential structures of auroral acceleration region border from multi-spacecraft Cluster data

Sadeghi, S.; Emami, M. R.

This paper studies an auroral event using data from three spacecraft of the Cluster mission, one inside and two at the poleward edge of the bottom of the Auroral Acceleration Region (AAR). The study reveals the three-dimensional profile of the region's poleward boundary, showing spatial segmentation of the electric potential structures and their d…