Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92..204c&link_type=abstract
Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. 204-211.
Astronomy and Astrophysics
Astrophysics
3
Dense Plasmas, Magnetohydrodynamic Stability, Plasma-Electromagnetic Interaction, Polarized Electromagnetic Radiation, Pulsars, Electromagnetic Wave Transmission, Linear Polarization, Nonlinear Equations, Perturbation Theory, Wave Equations
Scientific paper
It is shown that strong linearly polarized tranverse electromagnetic waves are unstable to a certain type of density fluctuation in the sense that transverse wave energy is transferred into the longitudinal mode. Since the strictly periodic solutions of the nonlinear wave equation are of a singular nature, one would expect that more general perturbations lead to the excitation of other modes. The analysis has been carried out for a plane wave only. It appears, however, that the conclusions drawn hold qualitatively also for other geometries. From this we conclude for pulsars that a periodic electromagnetic field can be expected only in their close vicinity.
Che Aixia
Kegel Wilhelm H.
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