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Two-dimensional multi-parameter fields of a limb flare loop system
Gu XM(顾啸马)1,2; Dun JP(敦金平)1; Zhong SH(钟树华)1; Gu, XM (reprint author), CAS, Yunnan Observ, Kunming 650011, Peoples R China.
Source PublicationASTRONOMY & ASTROPHYSICS
2001-12
Volume380Issue:2Pages:704-713
DOI10.1051/0004-6361:20011251
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordSun : Flares Sun : Fundamental Parameters
AbstractThe 2D H-beta spectral data of the post-flare loop system (PFLs) of August 17, 1989 are obtained and analyzed quantitatively. Four physical parameters (the line-of-sight velocity V-//, column number density of the hydrogen atoms at the second level along the line-of-sight direction N-2, the excitation temperature T-ex and the micro-turblence velocity V-t) and their 2D distributions are derived. The 2D fields of V-//, N-2, T-ex and V-t exhibit inhomogeneous and asymmetric properties in two loop legs. Red-shift velocities in the south leg are smaller than those of blue shift in the north leg where the velocity reaches 60 km s(-1). The values of N-2 and T-ex in the south leg are all much higher than those in the north leg, N-2 ranges between 0.5 to 4.5 x 10(13) cm(-2), while T-ex ranges from 0.8 to 2.2 x 10(4) K, lower at the top part than in the two legs. A high temperature region is located in the middle of the south leg. V-t at the top part is greater than that in the two legs, with the average being 30 similar to 40 km s(-1). Electron density n(e) and electron pressure P-e are estimated at 0.2 similar to 0.6 x 10(11) cm(-3) and at 0.04 similar to 0.12 dyn cm(-2), respectively. These results are compared with those obtained from the PFLs of 1984 February 18.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6361
URL查看原文
Archive Date2001-12-13
WOS IDWOS:000172620600032
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC RECONNECTION ; PROMINENCES ; COOL ; EVOLUTION ; PROFILES
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6038
Collection太阳物理研究组
Corresponding AuthorGu, XM (reprint author), CAS, Yunnan Observ, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Observatory, CAS, Kunming 650011 and National Astronomical Observatories, CAS,
2.United Laboratory of Optical Astronomy, CAS, Shanghai 200030, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gu XM,Dun JP,Zhong SH,et al. Two-dimensional multi-parameter fields of a limb flare loop system[J]. ASTRONOMY & ASTROPHYSICS,2001,380(2):704-713.
APA Gu XM,Dun JP,Zhong SH,&Gu, XM .(2001).Two-dimensional multi-parameter fields of a limb flare loop system.ASTRONOMY & ASTROPHYSICS,380(2),704-713.
MLA Gu XM,et al."Two-dimensional multi-parameter fields of a limb flare loop system".ASTRONOMY & ASTROPHYSICS 380.2(2001):704-713.
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