阿尔文波对太阳和行星际空间射电辐射过程的影响

阿尔文波是太阳和行星际空间中最普遍的电磁扰动现象，同时电子回旋脉泽辐射是导致太阳和行星际空间射电辐射现象最重要的物理机制之一，将阿尔文波和射电辐射过程结合在一起研究，是近几年才被提出和发展的前沿课题。本项目计划以电子回旋脉泽过程研究为主线，结合太阳与行星际空间射电辐射现象的观测分析和阿尔文波扰动状态的卫星实地探测资料，系统深入地研究各种不同等离子体环境下阿尔文波对电子回旋脉泽辐射机制的影响；基于理论结果与观测资料的对比分析，探讨某些射电现象的辐射过程；构建合适的物理模型，尝试诊断辐射源区的物理参数。主要的创新与特色是在射电辐射过程中引入阿尔文波，分析阿尔文波在太阳和行星际空间射电辐射过程中可能扮演的角色。该项目可进一步完善电子回旋脉泽辐射理论，揭示观测现象背后的微观物理机制，为太阳和行星际空间等离子体诊断提供更加合适的理论基础。

Alfvén wave is the most common phenomenon of electromagnetic disturbance in solar and interplanetary space, and electron cyclotron maser emission (ECME) is one of the most important emission mechanisms contributing to the radio emissions from the space. The study of radio emission processes with Alfvén waves is a leading-edge research topic proposed recently. Based on observations of the radio emissions and the data related to Alfvén waves detected in situ by satellites, this project plans to first study in depth the effects of Alfvén waves on ECME mechanism with various plasma environments, then discuss the emission processes of some radio phenomena and try to diagnose the parameters of emission source regions by establishing models. The feature of this project is that Alfvén waves are introduced and their possible roles are investigated in emission processes. This project should be helpful for us to improve the theory of ECME and reveal the relevant microphysical mechanisms in radio phenomena. It also will present a more suitable theoretical model for radio diagnostics of plasmas of solar and interplanetary space.