Properties of Stream Interactions and Their Associated Shocks near 1.52 au: MAVEN Observations
文献类型：期刊论文
| 作者 | Huang,Hui1; Guo,Jianpeng1,2,3,4; Wang,Zehao2,5; Lin,Haibo1; Zheng,Jianchuan6; Cui,Jun7; Xu,Xiaojun8; Wang,Yang9; Feng,Xueshang2; Wei,Yong4,5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-07-15 |
| 卷号 | 879期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | shock waves solar wind Sun: heliosphere |
| DOI | 10.3847/1538-4357/ab25e9 |
| 英文摘要 | Abstract The measurements from the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft are analyzed for the basic properties of solar wind stream interaction regions (SIRs) and their associated shocks at 1.52 au, as well as the evolution of SIRs from 1 to 1.52 au. A total of 149 SIRs are identified during the period from 2014 October to 2018 November, and 126 SIRs with high-quality data are selected for this study. The average occurrence rate of SIRs at 1.52 au is 36.3 yr?1, which is comparable to but slightly higher than that (32.4 yr?1) at 1 au, meaning that most SIRs are well formed at 1 au. The average duration of SIRs at 1.52 au is about 37.0 hr, comparable to that at 1 au (36.73 hr), indicating that SIRs have not yet expanded more rapidly as they are convected to 1.52 au. The maximum magnetic field strength and pressure of SIRs decrease significantly from 1 to 1.52 au. The shock association rates of SIRs increase from 20.3% to 33.3% or higher as SIRs evolve from 1 to 1.52 au. The forward shocks tend to occur twice more frequently than the reverse shocks. About 75% of shocks at 1.52 au are quasi-perpendicular shocks. The strength of the shocks becomes weaker and the average shock speed remains almost unchanged from 1 to 1.52 au. These results will help us understand the solar wind conditions at Mars and their potential impact on the Martian space environment. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-879-2-AB25E9 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/27190]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Planetary and Space Physics Group, Department of Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China; jpguo@bnu.edu.cn 2.State Key Laboratory of Space Weather, NSSC, Chinese Academy of Sciences, Beijing 100190, People's Republic of China 3.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 4.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, People's Republic of China 5.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 6.Shenzhen Astronomical Observatory, Shenzhen National Climate Observatory, Shenzhen 518040, People's Republic of China 7.School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 519082, People's Republic of China 8.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macao, People's Republic of China 9.School of Science, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Huang,Hui,Guo,Jianpeng,Wang,Zehao,et al. Properties of Stream Interactions and Their Associated Shocks near 1.52 au: MAVEN Observations[J]. The Astrophysical Journal,2019,879(2). |
| APA | Huang,Hui.,Guo,Jianpeng.,Wang,Zehao.,Lin,Haibo.,Zheng,Jianchuan.,...&Wan,Weixing.(2019).Properties of Stream Interactions and Their Associated Shocks near 1.52 au: MAVEN Observations.The Astrophysical Journal,879(2). |
| MLA | Huang,Hui,et al."Properties of Stream Interactions and Their Associated Shocks near 1.52 au: MAVEN Observations".The Astrophysical Journal 879.2(2019). |
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来源：国家天文台
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