Physics
Scientific paper
Dec 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970p%26ss...18.1753l&link_type=abstract
Planetary and Space Science, Volume 18, Issue 12, p. 1753-1767.
Physics
7
Scientific paper
This paper provides an analytical description of the propagation of magnetospherically reflecting, non-ducted whistler-mode waves, and attempts to evaluate which features of the magnetospheric plasma govern the wave reflection process. A new approximate wave dispersion relationship is derived valid for wave propagation vectors nearly normal to the ambient field direction and for frequencies below the lower hybrid frequency. This is then used to evaluate the instantaneous radius of curvature of non-ducted whistler ray paths. It is found that the major contribution to the ray curvature results from the gradient in the magnetic field strength along the direction of the field. Analytical expressions for the whistler ray paths suggest that waves near the lower hybrid frequency bounce back and forth across the geomagnetic equatorial plane, more or less along a given field line. At lower frequencies the waves are more confined to the equatorial plane and their penetration on each bounce across field lines is larger.
Lyons Larry R.
Mansergh Thorne Richard
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