直接观测火星小磁层磁顶点的磁力再连接情况

IF 4.6 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
R. T. Lin, S. Y. Huang, Z. G. Yuan, K. Jiang, H. H. Wu, Q. Y. Xiong
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引用次数: 0

摘要

虽然火星缺乏全球性的固有磁场,但它确实表现出地壳磁异常(主要在南半球)。这些地壳磁异常直接与太阳风相互作用,形成一个微型磁层和一个被称为微型磁层顶的区域。利用 "火星大气与挥发物演化 "的磁场和等离子体测量数据,我们报告了火星小磁层顶磁再连接的一个新案例。在这一过程中,火星大气中的质子和氧离子在重联过程中被加速,并可能沿流出方向逃逸。行星际磁场和地壳磁场之间可能在火星小磁极顶发生磁再连接,这有助于行星离子逃逸、太阳风进入小磁层以及日侧火星小磁层的磁拓扑演变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Direct Observations of Magnetic Reconnections at the Magnetopause of the Martian Mini-Magnetosphere

Direct Observations of Magnetic Reconnections at the Magnetopause of the Martian Mini-Magnetosphere

While Mars lacks a global intrinsic magnetic field, it does exhibit crustal magnetic anomalies (mostly in its Southern Hemisphere). These crustal magnetic anomalies directly interact with solar wind, which forms a mini-magnetosphere and a region denoted the mini-magnetopause. Using magnetic field and plasma measurements from the Mars Atmosphere and Volatile Evolution, we report a novel case of magnetic reconnection at the Martian mini-magnetopause. In this process, protons and oxygen ions from the Martian atmosphere were accelerated during reconnection and likely escaped along the outflow direction. Magnetic reconnection may occur between the interplanetary magnetic field and crustal magnetic fields at the Martian mini-magnetopause, which contributes to planetary ion escape, solar wind entering the mini-magnetosphere and the evolution of magnetic topology in the dayside Martian mini-magnetosphere.

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来源期刊
Geophysical Research Letters
Geophysical Research Letters 地学-地球科学综合
CiteScore
9.00
自引率
9.60%
发文量
1588
审稿时长
2.2 months
期刊介绍: Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.
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