Modulation of suprathermal electron fluxes by ultra-low-frequency magnetic field fluctuations in the Martian foreshock  

作　　者：TaiFeng Jin BinBin Ni Song Fu XiaoTong Yun ShuYue Pang MinYi Long QiongYue Zhang Nan Wang XinJie Xiong YiBin Zhao FangFei Shi 

机构地区：[1]School of Earth and Space Science and Technology,Wuhan University,Wuhan 430072,China

出　　处：《Earth and Planetary Physics》2025年第2期357-365,共9页地球与行星物理(英文版)

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 42188101, 42174188, 42474217, 42330207, 42374193, 42241143, and 42025404);the National Key R&D Program of China (Grant Nos. 2022YFF0503700 and 2022YFF0503900)。

摘　　要：Ultra-low-frequency(ULF) waves are ubiquitous in terrestrial and planetary environments, playing a crucial role in energy transfer and dissipation through wave–particle interactions within space plasmas. By performing a detailed event study in terms of particle distribution maps and wave–particle variable correlation maps, we report that ULF waves observed by the Mars Atmosphere and Volatile EvolutioN(MAVEN) spacecraft in the Martian foreshock can effectively modulate the suprathermal electron fluxes by the magnetic field fluctuations. In particular, the variations in electron fluxes at energies of ~10–100 eV are significant in the perpendicular direction, showing good relationships with changes in the wave field strength characterized by a correlation coefficient ~0.8. These findings demonstrate the generality of interactions of ULF waves with electrons, even at these low energies, highlighting the importance of such processes throughout the heliosphere.

关 键 词：Martian foreshock ULF waves electron modulation 

分 类 号：P185.3[天文地球—天文学]