| Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU | |
| Tang, C. L.; Song, S. Q.; Tang, CL (reprint author), Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China. | |
| Department | 空间科学部 |
| Source Publication | SOLAR PHYSICS
 |
| 2012 | |
| Volume | 279Issue:2Pages:537-550 |
| ISSN | 0038-0938 |
| Language | 英语 |
| Keyword | Solar Wind Shock Waves Instabilities |
| Abstract | Mirror mode waves in the solar wind are typically observed not as quasi-periodic sinusoidal signatures, but as trains of nonperiodic structures of two types: magnetic "peaks" and magnetic "dips." Some trains of long durations have been called mirror mode storms. In this work we report mirror mode waves downstream of a stream interaction region (SIR) forward shock observed near 1 AU on 7 May 2007 with Solar Terrestrial Relations Observatory (STEREO) and Time History of Events and Macroscale Interactions during Substorms (THEMIS) data. The high-resolution magnetic-field data (0.125-second resolution) from STEREO are scanned to search for magnetic dips and peaks (or upgoing magnetic "mesas") in the solar wind. STEREO-A observes a mirror mode storm: the appearance of mirror mode waves (mainly magnetic peaks and upgoing mesas) is simultaneous with the entry into a high-density, high-temperature, and high plasma beta accompanied by a depressed field region; the magnetic dips survive in the lower plasma-beta region. STEREO-B observes mirror mode waves (mainly magnetic peaks) with different amplitudes and asymmetric forms, which can survive in a low plasma beta region. THEMIS-D, which was located in the solar wind, also observes mirror mode waves (mainly magnetic peaks and upgoing mesas) as well as an enhanced ion temperature anisotropy (T (aSyen)a parts per thousand 3T (ayen)). The enhanced ion temperature anisotropy and high plasma beta satisfy the mirror-instability criterion. These observations of STEREO and THEMIS-D show that mirror mode waves can be excited downstream of a SIR forward shock near 1 AU.; Mirror mode waves in the solar wind are typically observed not as quasi-periodic sinusoidal signatures, but as trains of nonperiodic structures of two types: magnetic "peaks" and magnetic "dips." Some trains of long durations have been called mirror mode storms. In this work we report mirror mode waves downstream of a stream interaction region (SIR) forward shock observed near 1 AU on 7 May 2007 with Solar Terrestrial Relations Observatory (STEREO) and Time History of Events and Macroscale Interactions during Substorms (THEMIS) data. The high-resolution magnetic-field data (0.125-second resolution) from STEREO are scanned to search for magnetic dips and peaks (or upgoing magnetic "mesas") in the solar wind. STEREO-A observes a mirror mode storm: the appearance of mirror mode waves (mainly magnetic peaks and upgoing mesas) is simultaneous with the entry into a high-density, high-temperature, and high plasma beta accompanied by a depressed field region; the magnetic dips survive in the lower plasma-beta region. STEREO-B observes mirror mode waves (mainly magnetic peaks) with different amplitudes and asymmetric forms, which can survive in a low plasma beta region. THEMIS-D, which was located in the solar wind, also observes mirror mode waves (mainly magnetic peaks and upgoing mesas) as well as an enhanced ion temperature anisotropy (T (aSyen)a parts per thousand 3T (ayen)). The enhanced ion temperature anisotropy and high plasma beta satisfy the mirror-instability criterion. These observations of STEREO and THEMIS-D show that mirror mode waves can be excited downstream of a SIR forward shock near 1 AU. |
| 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/122/3147 |
| Collection | 空间科学部 |
| Corresponding Author | Tang, CL (reprint author), Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China. |
| Recommended Citation GB/T 7714 | Tang, C. L.,Song, S. Q.,Tang, CL . Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU[J]. SOLAR PHYSICS,2012,279(2):537-550. |
| APA | Tang, C. L.,Song, S. Q.,&Tang, CL .(2012).Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU.SOLAR PHYSICS,279(2),537-550. |
| MLA | Tang, C. L.,et al."Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU".SOLAR PHYSICS 279.2(2012):537-550. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20122792537.pdf（1033KB） | 开放获取 | CC BY-NC-SA | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment