Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations
文献类型：期刊论文
| 作者 | Li,Shibang6; Lu,Haoyu5,6; Cao,Jinbin5,6; Cui,Jun4; Ge,Yasong3; Zhang,Xiaoxin2; Rong,Zhaojin3; Li,Guokan6; Li,Yun1,5,6; Gao,Jiawei3 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 949期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/acc842 |
| 英文摘要 | Abstract In the Martian induced magnetosphere, the motion of planetary ions is significantly controlled by the ambient electric fields, which can be decomposed into three components: the motional, Hall, and ambipolar electric fields. Each of them is dominant in different regions and provides the ion acceleration with a particular effectiveness. Therefore, it is necessary to characterize the global distribution of these electric field components. In this study, a global multifluid Hall-MHD model is applied, which considers the motional, Hall, and ambipolar electric fields in ion transport and magnetic induction equations to self-consistently investigate the morphology of the electric fields in the Martian space environment. Numerical results suggest that the motional electric field is dominant in the upstream of the bow shock and in the magnetosheath along the Z MSE direction, leading to the formation of the ion plume escape channel. At the bow shock, the ambipolar electric field points outward, to decelerate and deflect the solar wind plasma flow. In the magnetosheath region, the ambipolar and motional electric fields with inward direction tend to reaccelerate the solar wind ions. However, along the magnetic pileup boundary, the Hall electric field pointing outward prevents the solar wind ions from penetrating the Martian induced magnetosphere, which also prevails in the Martian magnetotail region, to accelerate the ions’ tailward escape. This is the first systematic investigation of the global distribution of electric fields, which is helpful to understand the processes of ion acceleration/deceleration and escape within the Mars–solar wind interaction. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:APJ_949_2_88 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110548]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Lu,Haoyu |
| 作者单位 | 1.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078, People’s Republic of China 2.National Center for Space Weather, China Meteorological Administration, Beijing, 100081, People’s Republic of China 3.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, People’s Republic of China 4.School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai, 528478, People’s Republic of China 5.Key Laboratory of Space Environment Monitoring and Information Processing, Ministry of Industry and Information Technology, Beijing, 100191, People’s Republic of China 6.School of Space and Environment, Beihang University, Beijing, 100191, People’s Republic of China; lvhy@buaa.edu.cn |
| 推荐引用方式 GB/T 7714 | Li,Shibang,Lu,Haoyu,Cao,Jinbin,et al. Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations[J]. The Astrophysical Journal,2023,949(2). |
| APA | Li,Shibang.,Lu,Haoyu.,Cao,Jinbin.,Cui,Jun.,Ge,Yasong.,...&Wang,Jianxuan.(2023).Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations.The Astrophysical Journal,949(2). |
| MLA | Li,Shibang,et al."Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations".The Astrophysical Journal 949.2(2023). |
入库方式： OAI收割
来源：地质与地球物理研究所
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