CONFINED FLARES IN SOLAR ACTIVE REGION 12192 FROM 2014 OCTOBER 18 TO 29
文献类型：期刊论文
| 作者 | Chen, Huadong1 ; Zhang, Jun1; Ma, Suli2; Yang, Shuhong1; Li, Leping1; Huang, Xin1; Xiao, Junmin1; Yang,Shuhong; Huang,Xin; Chen,Huadong
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2015-07-20 |
| 卷号 | 808期号:1 |
| 关键词 | Sun: activity Sun: coronal mass ejections (CMEs) Sun: flares Sun: UV radiation |
| 英文摘要 | Using the observations from the Atmospheric Imaging Assembly and Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory, we investigate 6 X-class and 29 M-class flares occurring in solar active region (AR) 12192 from October 18 to 29. Among them, 30 (including 6 X-and 24 M-class) flares originated from the AR core, and the other 5 M-flares appeared at the AR periphery. Four of the X-flares exhibited similar flaring structures, indicating they were homologous flares with an analogous triggering mechanism. The possible scenario is that photospheric motions of emerged magnetic fluxes lead to shearing of the associated coronal magnetic field, which then yields a tether-cutting favorable configuration. Among the five periphery M-flares, four were associated with jet activities. The HMI vertical magnetic field data show that the photospheric fluxes of opposite magnetic polarities emerged, converged, and canceled with each other at the footpoints of the jets before the flares. Only one M-flare from the AR periphery was followed by a coronal mass ejection (CME). From October 20 to 26, the mean decay index of the horizontal background field within the height range of 40-105Mm is below the typical threshold for torus instability onset. This suggests that a strong confinement from the overlying magnetic field might be responsible for the poor CME production of AR 12192. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000358778900024 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5642]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 2.China Univ Petr, Coll Sci, Qingdao 266580, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Huadong,Zhang, Jun,Ma, Suli,et al. CONFINED FLARES IN SOLAR ACTIVE REGION 12192 FROM 2014 OCTOBER 18 TO 29[J]. ASTROPHYSICAL JOURNAL LETTERS,2015,808(1). |
| APA | Chen, Huadong.,Zhang, Jun.,Ma, Suli.,Yang, Shuhong.,Li, Leping.,...&Li,Leping.(2015).CONFINED FLARES IN SOLAR ACTIVE REGION 12192 FROM 2014 OCTOBER 18 TO 29.ASTROPHYSICAL JOURNAL LETTERS,808(1). |
| MLA | Chen, Huadong,et al."CONFINED FLARES IN SOLAR ACTIVE REGION 12192 FROM 2014 OCTOBER 18 TO 29".ASTROPHYSICAL JOURNAL LETTERS 808.1(2015). |
入库方式： OAI收割
来源：国家天文台
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