Solar EUV flux variation and flare brightenings
文献类型：期刊论文
| 作者 | Bao, Xingming; Xie, Wenbin |
| 刊名 | ADVANCES IN SPACE RESEARCH
 |
| 出版日期 | 2012-09-15 |
| 卷号 | 50期号:6页码:683-689 |
| 关键词 | EUV brightenings EUV intensity Solar flares |
| 英文摘要 | On 2010 February 8, the Extreme ultraviolet (EUV) flux variation in 195 A and flare brightening has been examined in different sizes of active regions by using SOHO/EIT, MDI and H alpha observational data. These three active regions represent a large active region with a sunspot group, a moderate active region without a sunspot and a small region with weak plage in H alpha band respectively. Our study shows that the main full disk EUV flux comes from active regions, especially from large active regions. The sudden increases of EUV flux are corresponding to the EUV flare brightenings. For the large active region, the local EUV 195 A flux peaks are well correlated to that of the GOES X-ray flux. The EUV 195 A flux peaking time of M-class flares delay GOES X-ray flux a few minutes. For the moderate active region, the local EUV 195 A flux is not well correlated to GOES X-ray flux. The EUV 195 A flare brightenings in the moderate active region appeared in the duration of sudden increase of its own local EUV flux. For the small active region, the local EUV 195 A flux varied almost independently of the GOES X-ray flux. Our study suggests that for an active region its local EUV 195 A flux is more closely correlated to the EUV flare brightening than the full disk GOES X-ray flux. (c) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000307687700006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6304]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Xingming,Xie, Wenbin. Solar EUV flux variation and flare brightenings[J]. ADVANCES IN SPACE RESEARCH,2012,50(6):683-689. |
| APA | Bao, Xingming,&Xie, Wenbin.(2012).Solar EUV flux variation and flare brightenings.ADVANCES IN SPACE RESEARCH,50(6),683-689. |
| MLA | Bao, Xingming,et al."Solar EUV flux variation and flare brightenings".ADVANCES IN SPACE RESEARCH 50.6(2012):683-689. |
入库方式： OAI收割
来源：国家天文台
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