О происхождении зебра-структуры в километровом излучении Юпитера
Origin of the fine structure as quasi-harmonic parallel drifting stripes of enhanced brightness (zebra-pattern) in the dynamic spectrum of the kilometric radiation is discussed. A possible interpretation of the observed strucrure basing on the effect of double pkasma resonance (DPR) in the Jupiter magnetosphere is analyzed. It is shown that the observed features of zebra pattern cannot be attributed to the DPR effect at the electron cyclotron harmonics. The suggested scheme consists of exitation of the ion cyclotron waves at the low hybrid frequency in the ion DPR regions and succeeding coalescence of such waves with a high frequency longitudinal wave at the high hybrid frequency. The source parameters necessary for matching the expected and obsrved properties of the Jupitre zebra pattern are discussed.