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Oxygen energization by localized perpendicular electric fields at the cusp boundary
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.ORCID iD: 0000-0003-1654-841x
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
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2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 37, no 9, article id L09103Article 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
American Geophysical Union (AGU), 2010. Vol. 37, no 9, article id L09103
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Physical Sciences
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URN: urn:nbn:se:kth:diva-253544DOI: 10.1029/2010GL043117ISI: 000277478000005Scopus ID: 2-s2.0-77952148760OAI: oai:DiVA.org:kth-253544DiVA, id: diva2:1325437
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QC 20190625

Available from: 2019-06-15 Created: 2019-06-15 Last updated: 2019-06-25Bibliographically approved

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Vaivads, Andris

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