High-frequency waves in hot magnetized solar and stellar coronal plasmas |
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| Authors: | V. G. Ledenev V. V. Tirsky V. M. Tomozov |
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| Affiliation: | 1.Institute of Solar and Terrestrial Physics, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia;2.Institute of Laser Physics, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia |
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| Abstract: | The characteristics of low-damping high-frequency waves in hot magnetized solar and stellar coronal plasmas under the conditions when the electron gyrofrequency ωHe is equal to or higher than the electron plasma frequency ωpe have been analyzed using the numerical solution of the dispersion equation. It is shown that the wave branches corresponding to the Z mode and ordinary waves approach each other when the magnetic field increases and become almost indistinguishable in a wide frequency range at all angles between the wave vector and magnetic field. A branch with anomalous dispersion appears at angles close to 90°. A new interpretation of broadband pulsations and spikes is suggested on the basis of the results. |
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