Abstract
Based on a numerical analysis of the dispersion relation for a hot magnetoplasma, we study the spectra of weakly damped high-frequency waves propagating in such a plasma in the case where the electron cyclotron frequency is higher than or equal to the plasma frequency. It is shown that with increasing magnetic field, the branches of the ordinary and slow extraordinary waves approach each other and become almost identical in wide ranges of frequencies and angles. A branch of waves with anomalous dispersion can appear if the angles between the wave vector and the magnetic field are close to 90°.
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