Deflection of Global Ion Flow by the Martian Crustal Magnetic Fields
文献类型：期刊论文
| 作者 | Fan,Kai1,2,3; Fraenz,Markus6; Wei,Yong1,2,3; Cui,Jun4,5 ; Rong,Zhaojin1,2,3; Chai,Lihui1,2,3; Dubinin,Eduard6
|
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 898期号:2 |
| ISSN号 | 2041-8205 |
| 关键词 | Mars Magnetic anomalies Solar-planetary interactions Planetary magnetosphere |
| DOI | 10.3847/2041-8213/aba519 |
| 英文摘要 | Abstract Without the protection of a global magnetic field, erosion of the Martian ionosphere by the solar wind leads to abundant loss of atmospheric particles. Although the crustal magnetic fields in the Martian southern hemisphere are strong enough to affect the dayside-induced magnetosphere, there is still limited evidence for the deflection of the solar winds by the crustal magnetic fields. With 4 years of ion data measured by the Mars Atmosphere and Volatile EvolutioN mission, we investigate the flow pattern of protons, O+, and when the crustal fields rotate to different local times. Our result is the first evidence that suggests the crustal magnetic fields can withstand the solar wind flows on the Martian dayside and can effectively trap heavy ions below 1000 km. The gyroradii of heavy ions in the strong crustal fields regions are one order of magnitude smaller than in other regions. The trapping effect causes different flow patterns, while the crustal fields rotate to different subsolar regions but are attenuated at higher altitudes. Observations provide essential information to investigate the effect of the crustal magnetic fields on heavy-ion flows and understand the role of the crustal magnetic fields in the interaction between the solar wind and the Martian atmosphere. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-898-2-ABA519 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/62720]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China 2.Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People's Republic of China 3.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People's Republic of China 4.Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China 5.Sun Yat-Sen University, School of Atmospheric Sciences, Zhuhai, People's Republic of China 6.Max-Planck-Institute for Solar System Research, Goettingen, Germany; fraenz@mps.mpg.de |
| 推荐引用方式 GB/T 7714 | Fan,Kai,Fraenz,Markus,Wei,Yong,et al. Deflection of Global Ion Flow by the Martian Crustal Magnetic Fields[J]. The Astrophysical Journal Letters,2020,898(2). |
| APA | Fan,Kai.,Fraenz,Markus.,Wei,Yong.,Cui,Jun.,Rong,Zhaojin.,...&Dubinin,Eduard.(2020).Deflection of Global Ion Flow by the Martian Crustal Magnetic Fields.The Astrophysical Journal Letters,898(2). |
| MLA | Fan,Kai,et al."Deflection of Global Ion Flow by the Martian Crustal Magnetic Fields".The Astrophysical Journal Letters 898.2(2020). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。