Collaborative Research: GEM--An Integrated Study of Fast Magnetosonic Waves in the Radiation Belts

这是一种理解辐射带中快速磁声波的激发及其与相对论性电子相互作用的建议。在赤道附近的磁层中，快速磁声波早已被观测到。它们被认为是由环状分布的高能（10s keV）质子产生的。最近的研究表明，这些波是离子伯恩斯坦波，其性质变化为磁子波，但这一点尚不清楚。快速磁声波通过朗道共振、弹跳共振和穿越时间散射对相对论性电子的俯仰角散射和加速有贡献。这些机制的相对重要性尚不清楚。本研究将使用卫星数据分析、线性动力学色散理论、动力学等离子体模拟和测试粒子计算来研究这些波的激发及其与相对论性电子的相互作用。PI是一名年轻的助理教授，这项工作将支持一名研究生。

This is a proposal to understand the excitation of fast magnetosonic waves and their interaction with relativistic electrons in the radiation belts. Fast magnetosonic waves have long been observed near the equator in the magnetosphere. They are thought to be generated by energetic (10s of keV) protons with a ring distribution. Recent studies indicate that these waves are ion Bernstein waves whose properties change to magnetosonic like but this is not understood. The fast magnetosonic waves are thought to contribute to pitch angle scattering and acceleration of relativistic electrons through Landau resonance, bounce resonance and transit time scattering. The relative importance of these mechanisms is not known. This research will use satellite data analysis, linear kinetic dispersion theory, kinetic plasma simulations and test particle computations to investigate the excitation of these waves and their interaction with the relativistic electrons.The PI is a young assistant professor and the work will support a graduate student.