A quantitative analysis of the surge of March 19, 1989

	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)
刊名	SOLAR PHYSICS
	1996-09
卷号	168 期号:1 页码:91-103
ISSN号	0038-0938
通讯作者	Li, KJ
产权排序	第一完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	H-ALPHA ; C-IV ; EVOLUTION ; FLARE ; LOOPS ; LINES
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2FBF00145827
语种	英语
WOS记录号	WOS:A1996VK88100007
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6022]
专题	云南天文台_太阳物理研究组
推荐引用方式 GB/T 7714	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	李可军,顾啸马,&钟树华.(1996).A quantitative analysis of the surge of March 19, 1989.SOLAR PHYSICS,168(1),91-103.
MLA	李可军,et al."A quantitative analysis of the surge of March 19, 1989".SOLAR PHYSICS 168.1(1996):91-103.