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Oxygen energization by localized perpendicular electric fields at the cusp boundary
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2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 37, no 9, 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. Citation: Lindstedt, T., Y. V. Khotyaintsev, A. Vaivads, M. Andre, H. Nilsson, and M. Waara (2010), Oxygen energization by localized perpendicular electric fields at the cusp boundary.

Place, publisher, year, edition, pages
Washington: American Geophysical Union (AGU), 2010. Vol. 37, no 9, L09103
Keyword [en]
ion energization, high-altitude, auroral region, cluster, outflows, magnetosphere, mechanisms, dynamics, waves
National Category
Geosciences, Multidisciplinary
URN: urn:nbn:se:umu:diva-43617DOI: 10.1029/2010GL043117ISI: 000277478000005OAI: diva2:414874
Available from: 2011-05-04 Created: 2011-05-04 Last updated: 2016-09-02Bibliographically approved

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Waara, Martin
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