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Time evolution and morphological characteristics of white light flare on 18 January 1989
Xuan JY(宣家余)2; Gu XM(顾啸马)1,2; Lin J(林隽)2; Jiang YC(姜云春)2; Zhong SH(钟树华)2; Li YS(李永生)2; Xuan, JY
发表期刊ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
1998-05
卷号129期号:3页码:553-561
DOI10.1051/aas:1998203
产权排序第2完成单位
收录类别SCI
关键词Sun Flares
摘要Some properties of the white light flare (WLF) that occurred on 18 January 1989 are presented. The flare consisted of 7 patched-shape kernels, with sizes (1.5 similar to 4) 10(17) cm(2). The lifetimes of the kernels were from several minutes to more than 40 minutes. The initial bright points of the WLF kernels originated between the umbra and penumbra in penumbra fibrils, between penumbra fibrils and the photosphere, or on the photosphere and light bridge. These kernels appeared 2 to 3 minutes after H alpha flares, and reached their maxima respectively before the first maximum and 1 to 2 minutes before the second maximum of the H alpha flare, and disappeared slowly before the disappearance of the H alpha flare. The direction and size of material motion in the kernels are different. The precur sors of the WLF are similar to those of ordinary flares. The magnetic pattern of the photosphere in the active region is in delta- structure, and the kernels lie at or near the changing magnetic neutral lines. The small longitudinal field gradient may be constrained by the small transverse field on the photosphere. The flare exhibited both temporal and spatial properties in the center reversal and line-width of H alpha profiles, and has characteristics of both class I and II. Thus it may be a mixed-class white light flare.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0365-0138
URL查看原文
WOS记录号WOS:000073690800012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]K-LINE PROFILES ; CHROMOSPHERIC FLARES ; NONTHERMAL PROCESSES ; MAGNETIC-FIELD ; H-ALPHA ; DIAGNOSTICS ; JUNE
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被引频次:1[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/114a53/6027
专题太阳物理研究组
通讯作者Xuan, JY
作者单位1.CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China
2.Yunnan Observatory, P.O. Box 110, Kunming 650011, China
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GB/T 7714
Xuan JY,Gu XM,Lin J,et al. Time evolution and morphological characteristics of white light flare on 18 January 1989[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,1998,129(3):553-561.
APA Xuan JY.,Gu XM.,Lin J.,Jiang YC.,Zhong SH.,...&Xuan, JY.(1998).Time evolution and morphological characteristics of white light flare on 18 January 1989.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,129(3),553-561.
MLA Xuan JY,et al."Time evolution and morphological characteristics of white light flare on 18 January 1989".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 129.3(1998):553-561.
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