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A quantitative analysis of the surge of March 19, 1989
Li KJ(李可军); Gu XM(顾啸马); Zhong SH(钟树华)
发表期刊SOLAR PHYSICS
1996-09-01
卷号168期号:1页码:91-103
产权排序第1完成单位
收录类别SCI
摘要A large surge event appearing in AR 5395 was observed at the Yunnan Observatory on March 19, 1989. H alpha spectral profiles of the event are interpreted by using a two-cloud model and the contours of three parameters: excitation temperature, T-exc, microturbulent velocity, V-t, and column density of hydrogen atoms at the second level, N-0,N-2, are obtained, respectively. The question about the unique feature of the solution obtained by the fitting method is also discussed. The results show that the surge is composed of some conglomerated materials with higher temperature and density; the mass ejection is probably intermittent. Neither T-exc, nor N-0,N-2 vary with the height over the solar limb but decrease from the center to the periphery of the surge. V-t varies from 10 to 30 km s(-1) and decreases with height. Some other important parameters, such as electron density, n(e), and electron pressure, P-e, etc., have also been estimated. In the surge, with N-0,N-2 about 2.0 x 10(12) cm(-2) and T-exc about 8500 K on average, we obtained n(e) = 1.80 x 10(10) cm(-3) and P-e = 0.023 dyn cm(-2). The energy variations of the surge during the ascending phase are estimated.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0038-0938
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WOS记录号WOS:A1996VK88100007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]H-ALPHA ; C-IV ; EVOLUTION ; FLARE ; LOOPS ; LINES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6022
专题太阳物理研究组
通讯作者Li KJ(李可军)
作者单位Yunnan Observatory, Chinese Academy of Sciences, YN65001l, PR. China
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Li KJ,Gu XM,Zhong SH. A quantitative analysis of the surge of March 19, 1989[J]. SOLAR PHYSICS,1996,168(1):91-103.
APA Li KJ,Gu XM,&Zhong SH.(1996).A quantitative analysis of the surge of March 19, 1989.SOLAR PHYSICS,168(1),91-103.
MLA Li KJ,et al."A quantitative analysis of the surge of March 19, 1989".SOLAR PHYSICS 168.1(1996):91-103.
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