Role of Lower-hybrid Waves to Radiation Belt Electrons

Details Role of Lower-hybrid Waves to Radiation Belt Electrons Role of Lower-hybrid Waves to Radiation Belt Electrons

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm41b2039c&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM41B-2039

Physics

[2752] Magnetospheric Physics / Mhd Waves And Instabilities, [2760] Magnetospheric Physics / Plasma Convection, [2772] Magnetospheric Physics / Plasma Waves And Instabilities, [2774] Magnetospheric Physics / Radiation Belts

Scientific paper

Many observations and modeling studies supported the importance of the interactions of waves and particles in vortices and reconnection regions of the near-Earth plasma sheet and in the low latitude boundary layer just inside the magnetopause. In particular, wave at lower-hybrid frequencies could play an important role in converting flow energy in MHD scale to waves and heat ions and electrons in kinetic scale or vice versa near the regions of high velocity shear or vorticities. Several mechanisms can produce or enhance the lower-hybrid waves. One of the important branches is the kinetic effects due to the electron-ion drift velocity shear instabilities. Although the theoretical studies and observations have been profound, the links between the two have been lacking. Recent advancements in space measurements have provided the opportunity in filling up the gaps. We will use these state-of-the-art space measurements to study the kinetic processes of how the flow energy is converted to heat or cool ions and electrons in the near-Earth plasma sheet and low latitude boundary layer where velocity shears occur and their possible contributions to radiation belt electrons.

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