Spectral analysis of the flare of 1998 November 11 based on the multi-cloud model

doi:10.1088/1009-9271/2/1/92

YNAO OpenIR > 太阳物理研究组

	Spectral analysis of the flare of 1998 November 11 based on the multi-cloud model
	Gu XM(顾啸马)1,3 ; Ding, MD 2; Gu, XM (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming, Peoples R China.
发表期刊	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2002-02
卷号	2 期号:1 页码:92-102
DOI	10.1088/1009-9271/2/1/92
分类号	P142
产权排序	第1完成单位
收录类别	SCI
关键词	Sun : Activity Sun : Flares Methods : Data Analysis
摘要	We have obtained 2D spectra of Halpha and CaII lambda 8542Angstrom for the flare of 1998 November 11, and derived its 2D velocity field and integrated intensity field, The velocity distribution shows that the red-shift and blue-shift velocities lie respectively in the northern and southern parts of the flare and that the maximum velocity seems to be located in two footpoints of the flare loop system. The integrated intensity distribution shows that the CaII lambda 8542Angstrom line is formed at a lower height than the Halpha line. we used 'multi-cloud model' (MCM) to obtain four parameters for the two lines (Doppler width, Deltalambda(D), Doppler shift, Deltalambda(0), line source function, S, and optical depth at the line center, tau(0)). We also estimated the column number densities of hydrogen at the second level, N-2, and of the ionized calcium at the third level, N-3, as well as the kinetic temperature, T-c. The wide Halpha profile at the loop top may be explained by an overlapping of two or more elementary profiles. It is shown that the uncertainty in calibration does not affect the derived Doppler shift and line broadening, only the source function and optical depth.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	1009-9271
URL	查看原文
归档日期	2002-02-06
WOS记录号	WOS:000174082600011
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	H-ALPHA-LINE ; NONTHERMAL PROCESSES ; SOLAR-FLARES ; LIMB FLARE ; LOOPS ; EVOLUTION ; COOL ; ASYMMETRIES ; PROFILES ; FIELDS
引用统计	被引频次：5[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/114a53/6055
专题	太阳物理研究组
通讯作者	Gu, XM (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming, Peoples R China.
作者单位	1.Yunnan Observatory, National Astronomical Observatories, CAS, Kunming 650011 2.Department of Astronomy, Nanjing University, Nanjing 210093 3.United Laboratory of Optical Astronomy, Chinese Academy of Sciences
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Gu XM,Ding, MD,Gu, XM . Spectral analysis of the flare of 1998 November 11 based on the multi-cloud model[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2002,2(1):92-102.
APA	Gu XM,Ding, MD,&Gu, XM .(2002).Spectral analysis of the flare of 1998 November 11 based on the multi-cloud model.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2(1),92-102.
MLA	Gu XM,et al."Spectral analysis of the flare of 1998 November 11 based on the multi-cloud model".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 2.1(2002):92-102.

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