Arase Observation of Simultaneous Electron Scatterings by Upper‐Band and Lower‐Band Chorus Emissions
Arase Observation of Simultaneous Electron Scatterings by Upper‐Band and Lower‐Band Chorus Emissions
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通过高能带和低能带合唱发射同时电子散射的 Arase 观察
DOI：
10.1029/2021gl093708
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发表时间：
2021
影响因子：
5.2
通讯作者：
I. Shinohara
中科院分区：
文献类型：
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作者：
Y. Kazama;Y. Miyoshi;H. Kojima;Y. Kasahara;S. Kasahara;H. Usui;B.‐J. Wang;S.‐Y. Wang;S. W. Y. Tam;T. F. Chang;K. Asamura;S. Matsuda;A. Kumamoto;F. Tsuchiya;Y. Kasaba;M. Shoji;A. Matsuoka;M. Teramoto;T. Takashima;I. Shinohara
本研究利用相关分析，探讨电子通量调制与合唱发射之间的关系。2017年4月18日，阿拉斯观测到电子通量的增强和带状合唱发射的加强。分析结果表明，上带和下带合唱发射与满足共振条件的场向电子通量具有良好的相关性。这表明与发射带和电子的同时相互作用，导致电子向磁场方向的俯仰角散射。此外，垂直方向的低能电子通量也与合唱强度呈正相关，这可能是因为合唱发射受到垂直低能电子通量波动的调制。
This study reports a relation between electron flux modulations and chorus emissions by using correlation analysis. On April 18, 2017, Arase observed an enhancement of electron fluxes and intensification of banded chorus emissions at the same time. A result of the analysis shows that both the upper‐band and lower‐band chorus emissions have good correlations with field‐aligned electron fluxes that satisfy their resonance conditions. This indicates simultaneous interactions with both the emission bands and electrons, resulting in electron pitch‐angle scattering toward the magnetic field direction. In addition, low‐energy electron fluxes in the perpendicular direction also show positive correlations with the chorus intensities, probably because the chorus emissions are modulated by a fluctuation of perpendicular low‐energy electron fluxes.