Multi-wavelength observation of the 3N/X3.3 flare of 28 November 1998
文献类型：期刊论文
| 作者 | You, JQ; Li, H ; Fan, ZY; Sakurai, T
|
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2001 |
| 卷号 | 203期号:1页码:107-117 |
| 关键词 | LIMB FLARE LINE SPECTRA |
| ISSN号 | 0038-0938 |
| 英文摘要 | The 3N/X3.3 flare of 28 November 1998 was observed in multiple wavelength simultaneously. The available data include H alpha images, spectra in He i 1083 nm and Ca ii 854.2 nm from Purple Mountain Observatory (PMO), soft X-ray (SXR) and hard X-ray (HXR) images and flux from Yohkoh. Morphological relationship investigation and spectral analysis of these data show: (1) The sudden brightening at loop top above the active region and the steep increase of SXR flux before flare onset suggest that the corona there had already been heated to some extent in the preflare phase. (2) The scales of the Ca ii 854.2 nm emission areas are very similar to those of the H alpha line, but the emission profiles look like those of the Ca ii K line. Most of the He i 1083 nm emissions exist in the bright H alpha kernels and can last to the decay phase. (3) Flare spectra show that line shift and asymmetry are very common in this flare not only in the impulsive phase but also in the decay phase. The difference in the line shifts or asymmetry between Ca ii 854.2 nm and He i 1083 nm, as well as the difference between the line center and wings of Ca ii 854.2 nm imply the existence of a velocity gradient in the line-of-sight direction. (4) Post-flare loops with very deep absorption (approximate to 70%) and very-high-velocity red shifts (30-90 km s(-)1) were observed in He i 1083 nm during the decay phase. However, only a slight dip can be found in the Ca ii 854.2 nm profile. |
| 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] | LIMB FLARE ; LINE ; SPECTRA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172172600008 |
| 公开日期 | 2013-01-31 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8198]  |
| 专题 | 紫金山天文台_太阳高能及相关物理过程研究团组 |
| 作者单位 | 1.CAS, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Natl Astron Observ, Tokyo 181, Japan |
| 推荐引用方式 GB/T 7714 | You, JQ,Li, H,Fan, ZY,et al. Multi-wavelength observation of the 3N/X3.3 flare of 28 November 1998[J]. SOLAR PHYSICS,2001,203(1):107-117. |
| APA | You, JQ,Li, H,Fan, ZY,&Sakurai, T.(2001).Multi-wavelength observation of the 3N/X3.3 flare of 28 November 1998.SOLAR PHYSICS,203(1),107-117. |
| MLA | You, JQ,et al."Multi-wavelength observation of the 3N/X3.3 flare of 28 November 1998".SOLAR PHYSICS 203.1(2001):107-117. |
入库方式： OAI收割
来源：紫金山天文台
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