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STATISTICAL STUDY OF CORONAL MASS EJECTIONS WITH AND WITHOUT DISTINCT LOW CORONAL SIGNATURES
Ma SL(马素丽)1,2,3; Attrill, GDR1; Golub, L1; Lin J(林隽)2; Ma, S (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA.
发表期刊ASTROPHYSICAL JOURNAL
2010-10-10
卷号722期号:1页码:289-301
DOI10.1088/0004-637X/722/1/289
产权排序第2完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Uv Radiation
摘要Taking advantage of the two viewpoints of the STEREO spacecraft, we present a statistical study of coronal mass ejections (CMEs) with and without distinct low coronal signatures (LCSs) from 2009 January 1 to August 31. During this period, the lines of sight from STEREO A and B are almost perpendicular and nearly a quarter of the Sun was observed by both. We identified 34 CMEs that originated from around this area and find that (1) about 1 out of 3 CMEs that were studied during 8 months of solar minimum activity are stealth CMEs; a CME is stealth if no distinct LCS (such as coronal dimming, coronal wave, filament eruption, flare, post-eruptive arcade) can be found on the disk. (2) The speeds of the stealth CMEs without LCSs are typically below 300 km s(-1). Comparing with the slow CMEs with LCSs, the stealth CMEs did not show any clear differences in their velocity and acceleration evolution. (3) The source regions of the stealth CMEs are usually located in the quiet Sun rather than active regions. Detailed study indicates that more than half of the stealth CMEs in this paper showed some faint change of the coronal structures (likely parts of flux ropes) when they could be observed over the solar limb before or during the CME evolution. Finally, we note that space weather detection systems based on LCSs totally independent of coronagraph data may fail to detect a significant proportion of CMEs.
项目资助者NASA [SP02H1701R, NNM07AB07C, NNX09AB11G] ; Program 973 [2006CB806303] ; NSFC [10873030, 40636031] ; CAS [KJCX2-YW-T04] ; Smithsonian Institution Restricted Endowment Funds ; [SAO-610089-4210-40610089HH0022]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000282908900026
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STEREO ; ORIGIN ; CMES ; SUN ; EVOLUTION ; FLARES ; WAVES ; LASCO
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被引频次:78[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6159
专题太阳物理研究组
通讯作者Ma, S (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA.
作者单位1.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
2.National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650011, China
3.Graduate School of CAS, Beijing 100049, China
第一作者单位中国科学院云南天文台
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Ma SL,Attrill, GDR,Golub, L,et al. STATISTICAL STUDY OF CORONAL MASS EJECTIONS WITH AND WITHOUT DISTINCT LOW CORONAL SIGNATURES[J]. ASTROPHYSICAL JOURNAL,2010,722(1):289-301.
APA Ma SL,Attrill, GDR,Golub, L,Lin J,&Ma, S .(2010).STATISTICAL STUDY OF CORONAL MASS EJECTIONS WITH AND WITHOUT DISTINCT LOW CORONAL SIGNATURES.ASTROPHYSICAL JOURNAL,722(1),289-301.
MLA Ma SL,et al."STATISTICAL STUDY OF CORONAL MASS EJECTIONS WITH AND WITHOUT DISTINCT LOW CORONAL SIGNATURES".ASTROPHYSICAL JOURNAL 722.1(2010):289-301.
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