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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Cherenkov emission of electron-cyclotron waves by a magnetized satellite orbiting the ionosphere
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Cherenkov emission of electron-cyclotron waves by a magnetized satellite orbiting the ionosphere

机译：切伦科夫辐射的电子回旋波一个磁化的卫星轨道电离层

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摘要

The emission of waves via Cherenkov effect is studied for a satellite orbiting the ionosphere and interacting actively with the surrounding plasma via a dipole magnetic field. The orbit height is chosen to be in the range 500-2000 km, in order to maximize the collective response of the plasma. The dispersion relation, in the cold plasma approximation, shows that the excitation occurs mainly for electron-cyclotron waves, namely whistler waves with frequencies in the proximity of the electron cyclotron resonance and the lower-hybrid frequency. The phase velocity is calculated as a function of the angles with respect of the satellite motion and of the Earth magnetic field, and the Mach cone is drawn for each emission frequency. The differential power emitted is calculated for this frequency range in the linear regime. As a result, the radiation power for a magnetized satellite is obtained.
机译：通过切伦科夫效应是海浪的排放研究了卫星轨道电离层并与周围的积极互动通过偶极磁场等离子体。选择高度在500 - 2000公里范围,为了最大化的集体反应等离子体。等离子体近似,表明该励磁主要用于电子回旋波发生,即惠斯勒波的频率邻近的电子回旋共振低混杂频率。计算角度的函数地球的卫星运动和尊重磁场,马赫锥画每个发射频率。排放计算的频率范围线性政权。权力的磁化卫星。

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