On phase and ray directions of magnetosonic waves |
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| Authors: | I Lerche |
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| Institution: | (1) Enrico Fermi Institute and Dept of Physics., University of Chicago, Chicago, Illinois, USA |
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| Abstract: | The behavior of phase speed for the  slow and fast magnetosonic waves is well documented in the literature. Not so well documented is the behavior of the ray direction and its relation to the phase direction — indeed we have not found the ray behavior recorded in most of the standard plasma physics texts. We rectify this situation and point out some of the curiosities associated with the direction of the slow ray relative to the direction of the slow phase wave. These calculations have been performed as a necessary basis for discussion of phase and ray evolution of magnetosonic waves in differentially shearing plasmas, which subject is the topic of a later paper. |
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