Observations of the field-aligned residual flow inside magnetic cloud structure
文献类型：期刊论文
| 作者 | Li HJ(李汇军) ; Feng XS(冯学尚) ; Zuo PB(左平兵) ; Xie YQ(谢艳琼) |
| 刊名 | Science in China Series E-Technological Sciences
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:9页码:2555-2566 |
| 关键词 | interplanetary medium solar wind magnetic cloud (MC) Sun: coronal mass ejections (CMEs) coronal mass ejections solar-wind reconstruction parameters |
| ISSN号 | 1006-9321 |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | In this paper, we report two MC events observed by WIND spacecraft with good examples of field-aligned residual flow inside the MC structure. For both events, the co-moving frames are determined through the deHoffman-Teller (HT) analysis and the axial orientations are inferred by the newly developed minimal residue (MR) method. The nature coordinate system for both events are constructed with velocity of the HT frame and the inferred MC axis, the field and flow remaining in the HT frame are analyzed at this coordinate system. As a result, we find that the residual flows in the co-moving HT frame of the two MC events are almost anti-parallel to the helical magnetic field. We speculate that the field-aligned residual flows are large scale coherent hydrodynamic vortices co-moving with the MCs at the supersonic speed near 1 AU. Data analyses show that the event in slow ambient solar wind is expanding at 1 AU and another one in fast solar wind does not show apparent expansion. Proton behaviors for both events are quasi-isothermal. Accelerated HT analysis shows that both events have no suitable HT frame with constant accelerations, which suggests that both events may be moving at the constant speed near 1 AU under the assumptions of the HT analysis. For both events, the ratio of the dynamic pressure to the magnetic pressure is larger than that of the thermal pressure to magnetic pressure, which suggests that the dynamic effects due to the plasma flows remaining in the co-moving HT frame are more important than the thermal effects in the study of MC evolution and propagation. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 原文出处 | http://www.springerlink.com/content/c445868728723743/fulltext.pdf |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/972]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Li HJ,Feng XS,Zuo PB,et al. Observations of the field-aligned residual flow inside magnetic cloud structure[J]. Science in China Series E-Technological Sciences,2009,52(9):2555-2566. |
| APA | 李汇军,冯学尚,左平兵,&谢艳琼.(2009).Observations of the field-aligned residual flow inside magnetic cloud structure.Science in China Series E-Technological Sciences,52(9),2555-2566. |
| MLA | 李汇军,et al."Observations of the field-aligned residual flow inside magnetic cloud structure".Science in China Series E-Technological Sciences 52.9(2009):2555-2566. |
入库方式： OAI收割
来源：国家空间科学中心
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。