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SUNSPOT ROTATION, SIGMOIDAL FILAMENT, FLARE, AND CORONAL MASS EJECTION: THE EVENT ON 2000 FEBRUARY 10
Yan XL(闫晓理)1; Qu ZQ(屈中权)1,2; Kong DF(孔德芳)1; Xu, CL1,3; Yan, XL (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2012-07-20
卷号754期号:1
DOI10.1088/0004-637X/754/1/16
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sunspots Sun: Surface Magnetism
摘要We find that a sunspot with positive polarity had an obvious counterclockwise rotation and resulted in the formation and eruption of an inverse S-shaped filament in NOAA Active Region 08858 from 2000 February 9 to 10. The sunspot had two umbrae which rotated around each other by 195 degrees. within about 24 hr. The average rotation rate was nearly 8 degrees hr(-1). The fastest rotation in the photosphere took place during 14:00 UT to 22:01 UT on February 9, with a rotation rate of nearly 16 degrees hr(-1). The fastest rotation in the chromosphere and the corona took place during 15:28 UT to 19:00 UT on February 9, with a rotation rate of nearly 20 degrees hr(-1). Interestingly, the rapid increase of the positive magnetic flux occurred only during the fastest rotation of the rotating sunspot, the bright loop-shaped structure, and the filament. During the sunspot rotation, the inverse S-shaped filament gradually formed in the EUV filament channel. The filament experienced two eruptions. In the first eruption, the filament rose quickly and then the filament loops carrying the cool and the hot material were seen to spiral counterclockwise into the sunspot. About 10 minutes later, the filament became active and finally erupted. The filament eruption was accompanied with a C-class flare and a halo coronal mass ejection. These results provide evidence that sunspot rotation plays an important role in the formation and eruption of the sigmoidal active-region filament.
项目资助者National Science Foundation of China (NSFC) [10903027, 11078005, 10943002] ; Yunnan Science Foundation of China [2009CD120] ; China's 973 project [G2011CB811400]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2012-07-02
WOS记录号WOS:000306111800016
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR ACTIVE-REGION ; FLUX ROPE ; MAGNETIC-FIELD ; YOHKOH SXT ; KINK INSTABILITY ; RAPID ROTATION ; NOAA 10930 ; EVOLUTION ; ERUPTION ; HELICITY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6195
专题太阳物理研究组
通讯作者Yan, XL (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Yunnan, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Graduate School of Chinese Academy of Sciences, Zhongguancun, Beijing 100049, China
3.Department of Mathematics, Yunnan Normal University, Kunming, Yunnan 650092, China
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GB/T 7714
Yan XL,Qu ZQ,Kong DF,et al. SUNSPOT ROTATION, SIGMOIDAL FILAMENT, FLARE, AND CORONAL MASS EJECTION: THE EVENT ON 2000 FEBRUARY 10[J]. ASTROPHYSICAL JOURNAL,2012,754(1).
APA Yan XL,Qu ZQ,Kong DF,Xu, CL,&Yan, XL .(2012).SUNSPOT ROTATION, SIGMOIDAL FILAMENT, FLARE, AND CORONAL MASS EJECTION: THE EVENT ON 2000 FEBRUARY 10.ASTROPHYSICAL JOURNAL,754(1).
MLA Yan XL,et al."SUNSPOT ROTATION, SIGMOIDAL FILAMENT, FLARE, AND CORONAL MASS EJECTION: THE EVENT ON 2000 FEBRUARY 10".ASTROPHYSICAL JOURNAL 754.1(2012).
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