A relativistic theory of the R wave cut-off

Details A relativistic theory of the R wave cut-off A relativistic theory of the R wave cut-off

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..433s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 4, April 1992, p. 433-437. Research supported by NERC, NWO, and Briti

Physics

1

Low Frequencies, Plasma Waves, Radio Emission, Rarefied Plasmas, Relativistic Theory, Wave Propagation, Cold Plasmas, Electron Plasma, Isotropic Media, Plasma Frequencies, Refractivity

Scientific paper

R wave propagation at frequencies near the cut-off frequency is studied in detail based on a weakly relativistic approximation. It is pointed out that the deviation of the relativistic cut-off frequency from the corresponding value of the cut-off frequency predicted by the theory of wave propagation in a cold plasma is particularly noticeable in a rarefied plasma. The theory proposed here predicts that the R wave in the frequency range under consideration can propagate without collisionless damping or amplification. The obtained results are applicable to the analysis of low frequency cut-off in the dynamic spectra of natural magnetospheric radio emissions at frequencies above the electron plasma frequency (nonthermal continuum).

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