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Oxygen energization by localized perpendicular electric fields at the cusp boundary
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, Department of Physics and Astronomy.
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, E-ISSN 1944-8007, Vol. 37, L09103- p.Article in journal (Refereed) Published
Abstract [en]

We report Cluster observations of oxygen energization by several keV at the boundary between the high latitude cusp and lobe. A localized electric field at the cusp/lobe boundary is responsible for a significant part of the observed energization. Such electric fields can be related to the separatrix region of reconnection at the magnetopause. Ions are accelerated as they move non-adiabatically in the spatially inhomogeneous electric field. Additional heating may be provided by low frequency waves at the oxygen gyrofrequency.

Place, publisher, year, edition, pages
2010. Vol. 37, L09103- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-137746DOI: 10.1029/2010GL043117ISI: 000277478000005OAI: oai:DiVA.org:uu-137746DiVA: diva2:378887
Available from: 2010-12-16 Created: 2010-12-15 Last updated: 2017-12-11Bibliographically approved

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Vaivads, Andris

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Swedish Institute of Space Physics, Uppsala DivisionDepartment of Physics and Astronomy
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