supported by the National Natural Science Foundation of China (Grant Nos. 42204167, 42174184 and 41974191);the National Key Research and Development Program of China (2021YFA0718600);the Informatization Plan of Chinese Academy of Sciences (Grant No. CAS-WX2022SF-0103);financial support from the Canadian Space Agency。
On 5 July 2021, the China FY-3E satellite was successfully launched, equipped with instruments to measure ultralow frequency waves(ULF) and charged particle populations deep within the magnetosphere. In this study, we...