On the Relation between Flare and CME during GLE-SEP and Non-GLE-SEP Events
文献类型：期刊论文
| 作者 | Firoz,K. A.1,2; Gan,W. Q.2; Moon,Y.-J.1; Rodríguez-Pacheco,J.3; Li,Y. P.2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-09-24 |
| 卷号 | 883期号:1 |
| 关键词 | The Sun |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab3c4e |
| 英文摘要 | Abstract Association of solar flares and coronal mass ejections (CMEs) with ground-level enhancement (GLE) is a recognized fact, but questions arise when a similar association is observed for non-GLEs. In this respect, we carry out a detailed study of the relation between flare fluences (? J m?2) and CME speeds (Vcme km s?1) during some selected GLEs and non-GLEs. As we found, most of the data points of ? (J m?2) and Vcme (km s?1) of GLEs follow a near-linear trend, with the ? (J m?2) increasing as the Vcme (km s?1) increases, resulting in a strong positive correlation (r?≥?0.82), while the correlation (r?≤?0.47) remains weak for non-GLEs. For any exceptional GLE, the ? (J m?2) and Vcme (km s?1) that do not maintain a near-linear trend over the whole flare phase do maintain at least a minimum rational proportionality over the flare rise phase, whereas this characteristic was not generally observed for non-GLEs. Although the ? (J m?2) and Vcme (km s?1) of some non-GLEs show a trend similar to those of GLEs, they indeed originated over the flare impulsive phases concomitant with coronal shock manifested in m type II bursts, while GLEs originated over the flare initial phase before the m type II. Flare peak fluences (?pk J m?2) and Vcme (km s?1) maintain weak correlation for both GLEs and non-GLEs, likely because the CME main acceleration ceases around the flare peak. However, though the ?pk (J m?2) governs the flare total fluence, it does not blur the correlation between the fluence over the flare rise phase (?r J m?2) and Vcme (km s?1), indicating that the flare peak/strength does not control the GLE occurrence. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-883-1-AB3C4E |
| 出版者 | The American Astronomical Society |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/28010]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.School of Space Research, Kyung Hee University, Yongin-si, Gyeonggi-do, 17104, Republic of Korea 2.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing, People's Republic of China 3.Space Research Group, Alcalá University, E-28871 Alcalá de Henares, Spain |
| 推荐引用方式 GB/T 7714 | Firoz,K. A.,Gan,W. Q.,Moon,Y.-J.,et al. On the Relation between Flare and CME during GLE-SEP and Non-GLE-SEP Events[J]. The Astrophysical Journal,2019,883(1). |
| APA | Firoz,K. A.,Gan,W. Q.,Moon,Y.-J.,Rodríguez-Pacheco,J.,&Li,Y. P..(2019).On the Relation between Flare and CME during GLE-SEP and Non-GLE-SEP Events.The Astrophysical Journal,883(1). |
| MLA | Firoz,K. A.,et al."On the Relation between Flare and CME during GLE-SEP and Non-GLE-SEP Events".The Astrophysical Journal 883.1(2019). |
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来源：紫金山天文台
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