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Kinematic characteristics of the surge on March 19, 1989
Gu XM(顾啸马); Lin J(林隽); Li KJ(李可军); Xuan JY(宣家余); Luan D(栾蒂); Li ZK(李治凯); GU, XM
Source PublicationASTRONOMY & ASTROPHYSICS
1994-02
Volume282Issue:1Pages:240-251
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun Activity Sun Flares Surges
AbstractThe H-alpha filtergrams, off-band images and H-alpha spectra of a surge and accompanying active objects were obtained at Yunnan Observatory on March 19,1989. Magnetograms of the corresponding super-active region were also obtained at Huairou-Beijing Observatory. The morphology and evolution of the surge and other active objects are considered based on the H-alpha filtergrams. The analysis of the H-alpha spectral profiles allows us to derive two-dimensional kinematic behaviours and velocity fields of the surge and other active objects. A two-cloud model and Beckers's one-cloud model are applied and discussed. The results show that the surge is present not only as an ascending movement with an average velocity V of about 70 kms(-1), but also a rotational motion with an average angular velocity omega of 1.5 x 10(-3) arc.s(-1). Both motions decrease with height above the solar limb. An expansion velocity of 25 kms(-1) is detected. The helical motion in the surge can be explained successfully by the theory of plasma double pole diffusion caused by a sharp density gradient between the surge and the surrounding corona.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6361
URL查看原文
WOS IDWOS:A1994MW31200032
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordHIGH-RESOLUTION PHOTOGRAPHY ; PHYSICAL PARAMETERS ; SOLAR CHROMOSPHERE ; DYNAMICS ; FILAMENT ; MODEL ; LOOPS ; FLARE
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6013
Collection太阳物理研究组
Corresponding AuthorGU, XM
AffiliationYunnan Observatory, P.O.Box 110, Kunming, Yunnan 650011, P.R. China
Recommended Citation
GB/T 7714
Gu XM,Lin J,Li KJ,et al. Kinematic characteristics of the surge on March 19, 1989[J]. ASTRONOMY & ASTROPHYSICS,1994,282(1):240-251.
APA Gu XM.,Lin J.,Li KJ.,Xuan JY.,Luan D.,...&GU, XM.(1994).Kinematic characteristics of the surge on March 19, 1989.ASTRONOMY & ASTROPHYSICS,282(1),240-251.
MLA Gu XM,et al."Kinematic characteristics of the surge on March 19, 1989".ASTRONOMY & ASTROPHYSICS 282.1(1994):240-251.
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