Electron acceleration in a geomagnetic Field Line Resonance

Details Electron acceleration in a geomagnetic Field Line Resonance Electron acceleration in a geomagnetic Field Line Resonance

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3902102d&link_type=abstract

Geophysical Research Letters, Volume 39, Issue 2, CiteID L02102

Physics

Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Electric Fields (2411), Magnetospheric Physics: Energetic Particles: Precipitating, Magnetospheric Physics: Field-Aligned Currents And Current Systems (2409), Magnetospheric Physics: Numerical Modeling

Scientific paper

A hybrid MHD kinetic-electron model in dipolar coordinates is used to simulate the upward current region of a geomagnetic Field Line Resonance (FLR) system for a realistic ambient electron temperature of a keV. It is found that mirror force effects result in potential drops sufficient to accelerate electrons to energies in excess of a keV in support of field aligned currents on the order of 0.5 μA/m2. The wave energy dissipated in this acceleration would completely damp an undriven FLR with an equatorial width of 0.5 RE within two resonance cycles.

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