Statistics – Applications
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986angeo...4..155s&link_type=abstract
Annales Geophysicae, Series A - Upper Atmosphere and Space Sciences, vol. 4, April 1986, p. 155-160.
Statistics
Applications
8
Earth Magnetosphere, Group Velocity, High Temperature Plasmas, Wave Propagation, Whistlers, Anisotropic Media, Gyrofrequency, Magnetospheric Electron Density
Scientific paper
An analytical analysis of the group velocity of whistler-mode waves propagating parallel to the magnetic field in a hot anisotropic plasma is presented. Some simple approximate formulae, which can be used for the magnetospheric applications, are derived. These formulae can predict some properties of this group velocity which were not previously recognized or were obtained by numerical methods. In particular, it is pointed out that the anisotropy tends to compensate for the influence of the electron temperature on the value of the group velocity when the wave frequency is well below the electron gyrofrequency. It is predicted, that under certain conditions, at frequencies near the electron gyrofrequency, this velocity tends towards zero.
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