Oxygen energization by localized perpendicular electric fields at the cusp boundary
2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 37, L09103- p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:uu:diva-137746DOI: 10.1029/2010GL043117ISI: 000277478000005OAI: oai:DiVA.org:uu-137746DiVA: diva2:378887