Implication for O+ nonadiabatic acceleration in the inner magnetosphere

Details Implication for O+ nonadiabatic acceleration in the inner magnetosphere Implication for O+ nonadiabatic acceleration in the inner magnetosphere

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm23c..07k&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM23C-07

Physics

[2720] Magnetospheric Physics / Energetic Particles: Trapped, [2730] Magnetospheric Physics / Magnetosphere: Inner, [2778] Magnetospheric Physics / Ring Current, [2788] Magnetospheric Physics / Magnetic Storms And Substorms

Scientific paper

We examine the temporal variations of ENA energy spectra observed by IMAGE/HENA during three substorms on 21 November 2001 and two substorms on 19 March 2002. All five substorms occurred during the storm main phase. The ENA energy used in the present study ranges from 10 keV to 198 keV for hydrogen and from 29 keV to 222 keV for oxygen. We use ENA data obtained from two independent areas of a HENA image, for which HENA line-of-sights pass through the inner magnetosphere (~-6 RE-8 RE). We discuss whether O+ energization in the inner magnetosphere is due to non-adiabatic acceleration in the inner magnetosphere or adiabatic transport of O+ non-adiabatically accelerated in the outer magnetosphere. We also present preliminary results of statistical studies on ENA energy spectra during storm-time substorms.

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