讲座信息

讲座题目：Waves in magnetic reconnection

讲座嘉宾：汪珊（北京大学 研究员）

讲座主持人：杨忠炜（中国科学院国家空间科学中心）

时间：3月10日10点

地点：线上 腾讯会议 411-8560-2478 (点此入会） 

                 线下 空间中心九章大厦天王星厅         

讲座摘要

Magnetic reconnection is a ubiquitous process in plasma physics,with explosive energy conversionfromelectromagneticfieldstoplasmas.High-spedflowsandhighly structured particle distributions are createdin the reconnection,which generate waves and turbulence.These processes in turnhave potential impact on reconnection by achieving energy dissipation,producing particle diffusion,and sustaining the reconnection electric field,etc. Understanding the effect of waves and the associated physical mechanisms requires detailed investigations of kinetic physics in the ion or even electron scale sub-regions in reconnection,which are much enabled by the progress of high-resolution spacecraft measurements and high performance computation capabilities for particle simulations. In this presentation, we will review some current understanding of waves in reconnection.A few key aspects include the types of ion-to-electron scale waves present in reconnection,their excitation mechanisms, wave-particle interactions, and their possible net impact on reconnection. In particular, we will share our studies onlower-hybrid and whistler waves in recent years. Hope that our discussions will encourage interests and ideas for further understanding of this topic.

嘉宾介绍