Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU

	Mirror Mode Waves Downstream of a Stream Interaction Region Forward Shock near 1 AU
	Tang, C. L.; Song, S. Q.
刊名	SOLAR PHYSICS
	2012
卷号	279 期号:2 页码:537-550
关键词	Solar wind Shock waves Instabilities
ISSN号	0038-0938
通讯作者	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.
中文摘要	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.
英文摘要	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.
学科主题	空间物理
收录类别	SCI
资助信息	National Natural Science Foundation of China [41004075, 40825014, 40890162]; Shandong Province Natural Science Foundation [ZR2010DQ014]; Specialized Research Fund for State Key Laboratories by the Open Research Fund in China; Open Research Fund for SOA Key Laboratory for Polar Science in China [KP201105]
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3147]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Tang, C. L.,Song, S. Q.. 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..(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.