Statistical Analysis of Circular-ribbon Flares | |
Zhang, Yanjie2,3; Zhang, Qingmin2,3; Song, Dechao2,3; Li, Shuting2,3; Dai, Jun2,3; Xu Z(徐喆)1; Ji, Haisheng2,3 | |
刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES |
2022-05-01 | |
卷号 | 260期号:1 |
ISSN号 | 0067-0049 |
DOI | 10.3847/1538-4365/ac5f4c |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | Circular-ribbon flares (CFs) are a special type of solar flares owing to their particular magnetic topology. In this paper, we conducted a comprehensive statistical analysis of 134 CFs from 2011 September to 2017 June, including 4 B-class, 82 C-class, 40 M-class, and 8 X-class flares. The flares were observed by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory spacecraft. The physical properties of CFs are derived, including the location, area (A (CF)), equivalent radius (r (CF)) assuming a semispherical fan dome, lifetime (tau (CF)), and peak soft X-ray (SXR) flux in 1-8 angstrom. It is found that all CFs are located in active regions, with the latitudes between -30 degrees and 30 degrees. The distributions of areas and lifetimes could be fitted with a lognormal function. There is a positive correlation between the lifetime and area. The peak SXR flux in 1-8 angstrom is well in accord with a power-law distribution with an index of -1.42. For the 134 CFs, 57% of them are accompanied by remote brightenings or ribbons. A positive correlation exists between the total length (L (RB)) and average distance (D (RB)) of remote brightenings. About 47% and 51% of the 134 CFs are related to type III radio bursts and jets, respectively. The association rates are independent of flare energies. About 38% of CFs are related to minifilament eruptions, and the association rates increase with flare classes. Only 28% of CFs are related to coronal mass ejections (CMEs), meaning that a majority of them are confined rather than eruptive events. There is a positive correlation between the CME speed and peak SXR flux in 1-8 angstrom, and faster CMEs tend to be wider. |
学科主题 | 天文学 ; 太阳与太阳系 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | NSFC[11790302] ; NSFC[11790300] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200] ; Strategic Priority Research Program on Space Science, CAS[XDA15320301] |
WOS关键词 | QUASI-PERIODIC PULSATIONS ; HARD X-RAY ; RHESSI MICROFLARE STATISTICS ; CORONAL NULL-POINT ; WHITE-LIGHT FLARE ; FREQUENCY-DISTRIBUTIONS ; MAGNETIC RECONNECTION ; SOLAR-FLARES ; CHROMOSPHERIC EVAPORATION ; FILAMENT ERUPTION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000794974100001 |
资助机构 | NSFC[11790302, 11790300] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200, XDA15320301] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25179] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Zhang, Qingmin |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People's Republic of China 2.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, CAS, Nanjing 210023, People's Republic of China; zhangqm@pmo.ac.cn; 3.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People's Republic of China; |
推荐引用方式 GB/T 7714 | Zhang, Yanjie,Zhang, Qingmin,Song, Dechao,et al. Statistical Analysis of Circular-ribbon Flares[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2022,260(1). |
APA | Zhang, Yanjie.,Zhang, Qingmin.,Song, Dechao.,Li, Shuting.,Dai, Jun.,...&Ji, Haisheng.(2022).Statistical Analysis of Circular-ribbon Flares.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,260(1). |
MLA | Zhang, Yanjie,et al."Statistical Analysis of Circular-ribbon Flares".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 260.1(2022). |
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