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Spectral study of a spray-like eruptive prominence
Zhong SH(钟树华); Gu XM(顾啸马); Liang HF(梁红飞); Gu, XM (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2004-09
卷号9期号:7页码:525-535
DOI10.1016/j.newast.2004.02.008
产权排序第1完成单位
收录类别SCI ; EI
关键词Sun : Prominences Techniques : Spectroscopic
摘要The 2D H-alpha spectral data of the spray-like eruptive prominence (EP) of March 5, 1991 are obtained and analyzed quantitatively by means of the 'multi-cloud model' (MCM) method. Four physical quantities (i.e. the column number density of hydrogen atoms at the second level along the line-of-sight direction, N-2, the excitation temperature T-ex, the line-of-sight velocity V-// and the micro-turbulence velocity V-t) and their 2D fields are derived. Results show that the EP may be divided into two parts, i.e. a main body (including the middle and the base of the EP) and a top part; the former is denser and hotter with a high macro-velocity and a nearly empty core, the latter thiner and cooler with a relatively higher micro-turbulence velocity. The 2D distributions of N-2, T-ex, V-// and V-t exhibit the properties of inhomogeneity and asymmetry of the EP. The values of N-2 and T-ex of the main body are all much greater than those of the top part of the prominence, N-2 ranges between 5 and 35x10(12) cm(-2) and T-ex ranges from 5 to 20x10(3) K, with the one of the top part lower than that of the main body. Two "mound" structures with higher temperatures and higher densities locate in two (upper and lower) regions of the main body. The blue-shift velocity in the EP predominates absolutely, the V-// varies from 8.0 to -110.0 km s(-1) on an average, with the higher velocity appearing in the main body. The V-t at the top part seems greater than that in the main body, With an averaged value being 30-40 km s(-1). The emission measure EM, electron density n(e) and pressure P-e in the EP are also estimated. (C) 2004 Elsevier B.V. All rights reserved.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1092
URL查看原文
归档日期2004-06-10
WOS记录号WOS:000224734500003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS-EJECTIONS ; POST-FLARE LOOPS ; MULTI-CLOUD-MODEL ; 26 JUNE 1992 ; MULTIPARAMETER FIELDS ; EVOLUTION ; PROFILES ; COOL
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被引频次:2[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/114a53/6069
专题太阳物理研究组
通讯作者Gu, XM (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
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Zhong SH,Gu XM,Liang HF,et al. Spectral study of a spray-like eruptive prominence[J]. NEW ASTRONOMY,2004,9(7):525-535.
APA Zhong SH,Gu XM,Liang HF,&Gu, XM .(2004).Spectral study of a spray-like eruptive prominence.NEW ASTRONOMY,9(7),525-535.
MLA Zhong SH,et al."Spectral study of a spray-like eruptive prominence".NEW ASTRONOMY 9.7(2004):525-535.
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