Catalog and Statistical Examinations of Lyα Solar Flares from GOES/EUVS-E Measurements
文献类型：期刊论文
| 作者 | Lu,Lei1,3; Feng,Li1; Li,Dong1,3; Ying,Beili1; Li,Hui1; Gan,Weiqun1; Li,Youping1; Zhou,Jiujiu2 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 253期号:1 |
| 关键词 | Astrostatistics distributions Solar flares Solar ultraviolet emission Algorithms |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/abd79b |
| 英文摘要 | Abstract The Lyman-alpha (Lyα) line of neutral hydrogen at 121.6 nm is by far the brightest emission line in the vacuum ultraviolet spectral range of the Sun. The emission at this line could be a major energy input to the upper layers of the Earth’s atmosphere, strongly impacting the geospace environment. The Geostationary Operational Environmental Satellite (GOES) series, starting with GOES-13, began to carry a multichannel Extreme UltraViolet Sensor (EUVS) with one channel (E-channel) targeting the Lyα line. In the present work, we produce a Lyα flare catalog from the GOES-15/EUVS-E data between 2010 April 8 and 2016 June 6 with an automatic flare detection algorithm. This algorithm is designed to search events at various scales and find their real start and end times. Based on the obtained flare list, statistics on the temporal behavior such as the duration, rise, and decay times, and the event asymmetries of Lyα flares is presented. On average (defined by the median of the distributions), the duration, rise and decay times of the flares were estimated to be 20.8 minutes, 5.6 minutes, and 14.2 minutes, respectively. We also discuss the frequency distributions of the peak flux and the fluence of Lyα flares, both of which reveal power-law behaviors with power-law indices of 2.71 ± 0.06 and 2.42 ± 0.06, respectively, implying that more flares are accumulated at small scales and these small-scale events play an important role in explaining the violent solar energy release. |
| 语种 | 英语 |
| WOS记录号 | IOP:0067-0049-253-1-ABD79B |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/60094]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Lu,Lei |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing, People's Republic of China leilu@pmo.ac.cn, lfeng@pmo.ac.cn 2.Department of Mathematics, Middlebury College, VT 05753, USA 3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Lu,Lei,Feng,Li,Li,Dong,et al. Catalog and Statistical Examinations of Lyα Solar Flares from GOES/EUVS-E Measurements[J]. The Astrophysical Journal Supplement Series,2021,253(1). |
| APA | Lu,Lei.,Feng,Li.,Li,Dong.,Ying,Beili.,Li,Hui.,...&Zhou,Jiujiu.(2021).Catalog and Statistical Examinations of Lyα Solar Flares from GOES/EUVS-E Measurements.The Astrophysical Journal Supplement Series,253(1). |
| MLA | Lu,Lei,et al."Catalog and Statistical Examinations of Lyα Solar Flares from GOES/EUVS-E Measurements".The Astrophysical Journal Supplement Series 253.1(2021). |
入库方式： OAI收割
来源：国家天文台
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