| Properties of the termination shock observed by Voyager 2 | |
| Li H(李晖); Wang C(王赤); Richardson, J. D.; 北京8701信箱 | |
| Department | 空间天气学国家重点实验室 |
| Source Publication | Geophysical Research Letters
 |
| 2008 | |
| Volume | 35Issue:19Pages:L19107 |
| ISSN | 0094-8276 |
| Language | 英语 |
| Keyword | Solar-wind |
| Abstract | In August 2007, Voyager 2 reached the termination shock and entered the heliosheath at a distance of about 83.6 AU. Due to the variations of the solar wind dynamic pressure or waves on the shock front, the termination shock moved back and forth, and Voyager 2 crossed the termination shock multiple times. We use the best fit solution of the Monte-Carlo method to define the upstream and downstream conditions and determine the properties of termination shock, such as the shock normal, speed, and strength. For the crossings on DOY 243.819243.875 (shock 1) and DOY 243.99-244.012(shock 2), the termination shock moved almost in the radial direction. The shock is nearly perpendicular, and the angle between the shock normal and the solar wind magnetic field is about 70 degrees. In the case of the first crossing, the termination shock moved away from the Sun with a speed of about 100 km s(-1), whereas the termination shock moved toward Sun with a speed of about 30 km s(-1) for the second crossing. The density ratios of the termination shock are 2.2 and 1.6, respectively. For both crossing events, the flow is found to be still supersonic with respect to the thermal ions downstream of the termination shock, probably due to the fact that most of the solar wind energy is transferred to the pickup ions. |
| Indexed By | SCI |
| Funding Project | 中国科学院空间科学与应用研究中心 |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/1122 |
| Collection | 空间科学部 |
| Corresponding Author | 北京8701信箱 |
| Recommended Citation GB/T 7714 | Li H,Wang C,Richardson, J. D.,et al. Properties of the termination shock observed by Voyager 2[J]. Geophysical Research Letters,2008,35(19):L19107. |
| APA | 李晖,王赤,Richardson, J. D.,&北京8701信箱.(2008).Properties of the termination shock observed by Voyager 2.Geophysical Research Letters,35(19),L19107. |
| MLA | 李晖,et al."Properties of the termination shock observed by Voyager 2".Geophysical Research Letters 35.19(2008):L19107. |
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| 20083519L19107.pdf（1155KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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