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DOI | 10.1029/2020GL091437 |
Effect of the electric field on the agyrotropic electron distributions | |
C. ‐; H. Gao; B. ‐; B. Tang; W. Y. Li; C. Wang; Yu. V. Khotyaintsev; D. B. Graham; D. J. Gershman; A. C. Rager; B. L. Giles; P. ‐; A. Lindqvist; R. E. Ergun; C. T. Russell; J. L. Burch | |
2021-02-06 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | We investigate agyrotropic electron distributions from two magnetopause events observed by Magnetospheric Multiscale (MMS) spacecraft. Agyrotropic electron distributions can be generated by the finite electron gyration at an electron‐scale boundary, and the electric field normal to this boundary usually contributes to the electron acceleration to make the agyrotropic distributions more apparent. The effect of the electric field becomes important only when it is sufficiently strong and local, meaning its electrostatic potential is comparable to or larger than the electron temperature, and its width is smaller than the electron thermal gyroradius, so that this electric field can directly accelerate part of the electrons out of the original core to form agyrotropic electron distributions. Also, we reproduce the measured electron “finger” structures from test particle simulations, which can be effectively suppressed by increasing the sampling rate of the electron measurement. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313784 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. ‐,H. Gao,B. ‐,et al. Effect of the electric field on the agyrotropic electron distributions[J]. Geophysical Research Letters,2021. |
APA | C. ‐.,H. Gao.,B. ‐.,B. Tang.,W. Y. Li.,...&J. L. Burch.(2021).Effect of the electric field on the agyrotropic electron distributions.Geophysical Research Letters. |
MLA | C. ‐,et al."Effect of the electric field on the agyrotropic electron distributions".Geophysical Research Letters (2021). |
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