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Electric potential structures of auroral acceleration region border from multi-spacecraft Cluster data
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology. Institute for Aerospace Studies, University of Toronto.ORCID iD: 0000-0003-4977-6339
2018 (English)In: Advances in Space Research, ISSN 0273-1177, E-ISSN 1879-1948, Vol. 61, no 8, p. 2050-2056Article in journal (Refereed) Published
Abstract [en]

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 decay in time. It also depicts localized magnetic field variations and field-aligned currents that appear to have remained stable for at least 80 s. Such observations became possible due to the fortuitous motion of the three spacecraft nearly parallel to each other and tangential to the AAR edge, so that the differences and variations can be seen when the spacecraft enter and exit the segmentations, hence revealing their position with respect to the AAR.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 61, no 8, p. 2050-2056
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Onboard space systems
Identifiers
URN: urn:nbn:se:ltu:diva-67530DOI: 10.1016/j.asr.2018.01.024OAI: oai:DiVA.org:ltu-67530DiVA, id: diva2:1180583
Note

Validerad;2018;Nivå 2;2018-03-22 (rokbeg)

Available from: 2018-02-06 Created: 2018-02-06 Last updated: 2018-03-22Bibliographically approved

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