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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Signatures of electron Landau resonant interactions with chorus waves from THEMIS observations
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Signatures of electron Landau resonant interactions with chorus waves from THEMIS observations

机译：签名的电子朗道共振忒弥斯与合唱波的交互观察

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摘要

Simultaneous observations of electron phase space density (PSD) and chorus waves for more than 4 years by the Time History of Events and Macroscale Interactions during Substorms (THEMIS) are analyzed to identify signatures of the electron Landau resonant interactions with chorus waves in the radiation belts. Chorus waves play an important role in the radiation belt dynamics by effectively interacting with electrons. Landau resonant interactions arise when the waves are not exactly parallel propagating. Such interactions lead to “plateaus” along v_‖ in the electron velocity distributions, where v_‖ is the parallel (with respect to the background magnetic field) component of the electron velocity. The analyzed electron PSDs often demonstrate local minima in the derivative of the velocity distribution along v_‖ near the Landau resonant velocity calculated from the simultaneous in situ wave observations. These minima are, therefore, direct signatures and solid evidence of the electron Landau resonant interactions with chorus waves.
机译：同时观测的电子相空间密度(PSD)和合唱海浪超过4年之久的历史和事件宏观尺度相互作用在亚暴(裁判)分析识别的签名吗兰多电子共振相互作用与合唱波辐射带。辐射带动力学中的一个重要的角色通过有效互动的电子。共振相互作用时出现的海浪不完全平行传播。相互作用导致“高原”v_为电子速度分布,v_为是(关于背景磁场平行字段)组件电子的速度。分析了电子PSDs经常展示当地在速度的导数最小值分布在v_为附近的朗道共振从原位同步速度计算波的观测。直接的签名和确凿的证据兰多电子共振相互作用与合唱波。

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