Time evolution and morphological characteristics of white light flare on 18 January 1989

doi:10.1051/aas:1998203

YNAO OpenIR > 太阳物理研究组

	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
DOI	10.1051/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
ISSN	0365-0138
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
引用统计	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/114a53/6027
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
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	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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