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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)
Source PublicationNEW ASTRONOMY
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordSun : Prominences Techniques : Spectroscopic

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.

Subject Area天文学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Archive Date2004-06-10
WOS IDWOS:000224734500003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCoronal Mass-ejections ; Post-flare Loops ; Multi-cloud-model ; 26 June 1992 ; Multiparameter Fields ; Evolution ; Profiles ; Cool
EI Accession Number2004248205276
EI KeywordsAstrophysics
EI Classification Number657.2extraterrestrial Physics And Stellar Phenomena - 701.1electricity: Basic Concepts And Phenomena - 741.1light/optics - 801chemistry - 804chemical Products Generally - 921mathematics
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorGu XM(顾啸马)
AffiliationNational Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhong SH,Gu XM,Liang HF. Spectral study of a spray-like eruptive prominence[J]. NEW ASTRONOMY,2004,9(7):525-535.
APA Zhong SH,Gu XM,&Liang HF.(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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