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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.
Source PublicationASTROPHYSICAL JOURNAL
2010-10-10
Volume722Issue:1Pages:289-301
DOI10.1088/0004-637X/722/1/289
Contribution Rank第2完成单位
Indexed BySCI
KeywordSun: Activity Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Uv Radiation
AbstractTaking 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.
Funding OrganizationNASA [SP02H1701R, NNM07AB07C, NNX09AB11G] ; Program 973 [2006CB806303] ; NSFC [10873030, 40636031] ; CAS [KJCX2-YW-T04] ; Smithsonian Institution Restricted Endowment Funds ; [SAO-610089-4210-40610089HH0022]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
WOS IDWOS:000282908900026
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTEREO ; ORIGIN ; CMES ; SUN ; EVOLUTION ; FLARES ; WAVES ; LASCO
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6159
Collection太阳物理研究组
Corresponding AuthorMa, S (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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