Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24
文献类型：期刊论文
| 作者 | Chang,Qing4; Xu,Xiaojun4; Xu,Qi4; Zhong,Jun3; Xu,Jiaying4; Wang,Jing4; Zhang,Tielong1,2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-10-15 |
| 卷号 | 884期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | planets and satellites: magnetic fields Sun: activity Sun: magnetic fields solar wind |
| DOI | 10.3847/1538-4357/ab412a |
| 英文摘要 | Abstract By assuming that the solar wind flow is spherically symmetric and that the flow speed becomes constant beyond some critical distance r?=?R0 (neglecting solar gravitation and acceleration by high coronal temperature), the large-scale solar wind magnetic field lines are distorted into a Parker spiral configuration, which is usually simplified to an Archimedes spiral. Using magnetic field observations near Mercury, Venus, and Earth during solar maximum of Solar Cycle 24, we statistically surveyed the Parker spiral angles and obtained the empirical equations of the Archimedes and Parker spirals by fitting the multiple-point results. We found that the solar wind magnetic field configurations are slightly different during different years. Archimedes and Parker spiral configurations are quite different from each other within 1 au. Our results provide empirical Archimedes and Parker spiral equations that depend on the solar wind velocity and the critical distance (R0). It is inferred that R0 is much larger than that previously assumed. In the near future, the statistical survey of the near-Sun solar wind velocity by Parker Solar Probe can help verify this result. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-884-2-AB412A |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/93870]  |
| 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 |
| 作者单位 | 1.Space Research Institute, Austrian Academy of Sciences, Graz, Austria 2.Harbin Institute of Technology, Shenzhen, 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.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macao, People's Republic of China; xjxu@must.edu.mo |
| 推荐引用方式 GB/T 7714 | Chang,Qing,Xu,Xiaojun,Xu,Qi,et al. Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24[J]. The Astrophysical Journal,2019,884(2). |
| APA | Chang,Qing.,Xu,Xiaojun.,Xu,Qi.,Zhong,Jun.,Xu,Jiaying.,...&Zhang,Tielong.(2019).Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24.The Astrophysical Journal,884(2). |
| MLA | Chang,Qing,et al."Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24".The Astrophysical Journal 884.2(2019). |
入库方式： OAI收割
来源：地质与地球物理研究所
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