Time evolution and morphological characteristics of white light flare on 18 January 1989
文献类型：期刊论文
| 作者 | 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
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| 刊名 | ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
 |
| 出版日期 | 1998-05 |
| 卷号 | 129期号:3页码:553-561 |
| 关键词 | sun flares |
| ISSN号 | 0365-0138 |
| 产权排序 | 第二完成单位 |
| 通讯作者 | Xuan, JY |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | K-LINE PROFILES ; CHROMOSPHERIC FLARES ; NONTHERMAL PROCESSES ; MAGNETIC-FIELD ; H-ALPHA ; DIAGNOSTICS ; JUNE |
| 收录类别 | SCI |
| 原文出处 | http://aas.aanda.org/articles/aas/abs/1998/09/ds4135/ds4135.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000073690800012 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6027]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 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 |
| 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,&Li YS.(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. |
入库方式： OAI收割
来源：云南天文台
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