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Magnetic reconnection and cold plasma at the magnetopause
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
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2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 37, no 22, L22108- p.Article in journal (Refereed) Published
Abstract [en]

We report on detailed observations by the four Cluster spacecraft of magnetic reconnection and a Flux Transfer Event (FTE) at the magnetopause. We detect cold (eV) plasma at the magnetopause with two independent methods. We show that the cold ions can be essential for the electric field normal to the current sheet in the separatrix region at the edge of the FTE and for the associated acceleration of ions from the magnetosphere into the reconnection jet. The cold ions have small enough gyroradii to drift inside the limited separatrix region and the normal electric field can be balanced by this drift, E approximate to -v x B. The separatrix region also includes cold accelerated electrons, as part of the reconnection current circuit.

Place, publisher, year, edition, pages
2010. Vol. 37, no 22, L22108- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-147108DOI: 10.1029/2010GL044611ISI: 000284703200001OAI: oai:DiVA.org:uu-147108DiVA: diva2:399939
Available from: 2011-02-24 Created: 2011-02-24 Last updated: 2014-11-12Bibliographically approved

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Vaivads, Andris

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