Other
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975afz....11..305s&link_type=abstract
Astrofizika, vol. 11, May 1975, p. 305-318. In Russian.
Other
9
Cold Plasmas, Plasma-Electromagnetic Interaction, Pulsars, Relativistic Plasmas, Stellar Magnetic Fields, Wave Dispersion, Longitudinal Waves, Phase Velocity, Tensor Analysis, Wave Attenuation, Wave Generation
Scientific paper
Dispersion properties of electromagnetic waves are investigated in a relativistic plasma with a one-dimensional distribution function established by radiation losses in a strong magnetic field. It is shown that longitudinal waves in such a plasma exist in a certain frequency range near the plasma frequency, that they propagate at small angles to the external magnetic field, and that their phase velocities exceed the speed of light. As a result, the generation of longitudinal waves is not preferred over that of other wave types (Cerenkov-like generation of such waves is impossible). It is found that in the 'quasi-vacuum' approximation, the dispersion properties of electromagnetic waves in low-frequency ranges are analogous to those of ordinary waves in the corresponding frequency ranges in a cold plasma. A relativistic plasma is shown to be distinguished by wave attenuation due to the presence of a gyrofrequency continuum and strong spatial dispersion. Instability increments of Alfven and fast magnetoacoustic waves associated with the one-dimensional nature of the distribution frequency are obtained for the case of quasi-longitudinal propagation.
Chugunov Iu. V.
Suvorov E. V.
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