Physics – Plasma Physics
Scientific paper
Sep 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgra..11500f19v&link_type=abstract
Journal of Geophysical Research, Volume 115, Issue 1, CiteID A00F19
Physics
Plasma Physics
2
Magnetospheric Physics: Plasma Waves And Instabilities (2471), Magnetospheric Physics: Magnetosphere: Outer, Magnetospheric Physics: Mhd Waves And Instabilities (2149, 6050, 7836), Space Plasma Physics: Kinetic And Mhd Theory
Scientific paper
We discuss chorus wave magnetic and electric field polarizations as functions on angle of propagation relative to the ambient magnetic field B0. For the first time, it is shown using a cold plasma approximation that the general whistler wave has circularly polarized magnetic fields for oblique propagation. This theoretical result is verified by observations. The electric field polarization plane is not orthogonal to the wave vector k and is in general highly elliptically polarized. Both the magnetic and the electric polarizations have important consequences for cyclotron resonant electron pitch angle scattering and for electron energization, respectively. A special case of the whistler wave called the Gendrin mode is discussed.
Lakhina Gurbax S.
Tsurutani Bruce T.
Verkhoglyadova Olga P.
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