MAVEN observation of magnetosonic waves in the Martian magnetotail region  

作　　者：ShangChun Teng JiCheng Sun JiaWei Gao Y.Harada Markus Fraenz DeSheng Han 

机构地区：[1]State Key Laboratory of Marine Geology,School of Ocean and Earth Science,Tongji University,Shanghai 200092,China [2]MNR Key Laboratory for Polar Science,Polar Research Institute of China,Shanghai 200136,China [3]Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [4]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [5]Department of Geophysics,Kyoto University,Kyoto,Japan [6]Max-Planck-Institute for Solar System Research,Goettingen,Germany

出　　处：《Earth and Planetary Physics》2024年第2期317-325,共9页地球与行星物理（英文版）

基　　金：the National Natural Science Foundation of China(42030101,42204158);Shanghai Pujiang Program(No.21PJD078);Shanghai Science and Technology Innovation Action Plan(No.21DZ1206100);the Fundamental Research Funds for the Central Universities.

摘　　要：Magnetosonic waves are an important medium for energy transfer in collisionless space plasma.Magnetosonic waves have been widely investigated in the upstream of the bow shock at Mars.These waves are believed to originate from pickup ions or reflected particles.By utilizing MAVEN spacecraft data,we have observed the occurrence of quasi-perpendicularly propagating magnetosonic emissions near the proton gyrofrequency in the Martian magnetotail region.These plasma waves are associated with a significant enhancement of proton and oxygen flux.The excited magnetosonic waves could possibly heat the protons through resonance and facilitate the ionospheric plasma escape.Our results could be helpful to better understand the Mars’magnetospheric dynamics and offer insights into possible energy redistribution between waves and plasma in the Martian nightside magnetosphere.

关 键 词：Martian magnetotail region magnetosonic waves proton escape 

分 类 号：P185.3[天文地球—天文学]