Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13b2071k&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM13B-2071
Physics
Plasma Physics
[2753] Magnetospheric Physics / Numerical Modeling, [2772] Magnetospheric Physics / Plasma Waves And Instabilities, [7868] Space Plasma Physics / Wave/Wave Interactions
Scientific paper
We investigate the role of electron inertia on ULF wave absorption in the magnetosphere. Recently, wave simulations and numerical calculations show that resonant absorption at the ion-ion hybrid (IIH) resonance occurs in multi-ion plasmas at Earth and Mercury. The IIH resonance is believed to have an important role for electromagnetic ion cyclotron wave generation near the equatorial region and energy transfer at the magnetopause. By adopting a multi-fluid wave model that can fully include effects of electrons and multi-ions, we show how resonant absorptions occur in electron-proton-helium/oxygen plasmas when electron inertial effect is considered. Our results show that (a) resonant absorption occur at both IIH and Bushsbaum (BB) resonances, (b) IIH resonant waves are electronmagentic while (c) BB resonance has electrostatic, and (d) the frequency drift from IIH to BB resonance in the dynamics spectra.
Johnson Jesse
Kim Erik
Lee Daehee
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