Oxygen energization by localized perpendicular electric fields at the cusp boundary

Details Oxygen energization by localized perpendicular electric fields at the cusp boundary Oxygen energization by localized perpendicular electric fields at the cusp boundary

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3709103l&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 9, CiteID L09103

Physics

2

Magnetospheric Physics: Cusp, Magnetospheric Physics: Electric Fields (2411), Magnetospheric Physics: Magnetic Reconnection (7526, 7835)

Scientific paper

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.

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