Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface
文献类型：期刊论文
| 作者 | Xue,Z. K.3,4,6; Yan,X. L.4,6; Yang,L. H.3,4,6; Chen,J.3; Wang,J. C.4,6; Liu,Z.4,5,6; Lee,K. H.1; Lee,L. C.1,2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-06-29 |
| 卷号 | 915期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | Solar magnetic reconnection Solar activity Solar magnetic fields |
| DOI | 10.3847/1538-4357/abfb71 |
| 英文摘要 | Abstract We analyze six cases of magnetic reconnection with large separatrix angles and separatrix jets observed on the solar disk. The separatrix angle is defined as the angle between the two separatrices on the two sides of the outflow region. The plasma jets are observed immediately downstream of the separatrices. The morphological characteristics and magnetic field configurations of all magnetic reconnections are displayed. At the same time, we calculate several physical parameters of each case, which include the inflow velocity (from 2.3 to 24 km s?1), the outflow velocity (from 1.9 to 43 km s?1), the separatrix jet velocity (from 13 to 82 km s?1), the width (from 0.42 × 103 to 1.2 × 103 km) and length (from 1.4 × 103 to 4.3 × 103 km) of the current sheet, and the separatrix angle θsep (from 72° to 128°). We find that the outflow velocity, the separatrix jet velocity, and the width and length of the current sheet are positively related to the inflow velocity, but the separatrix angle does not depend on the inflow velocity and it is related to the initial magnetic field configuration before magnetic reconnection. Meanwhile, the velocities of the outflow and the separatrix jet decrease with increasing θ sep ? 90 ° , indicating that when the separatrix angle is close to 90°, the jet and the outflow reach their maximum velocities. These observations are compared with the results of the theoretical model and the numerical simulation. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-915-1-ABFB71 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57306]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Lee,L. C. |
| 作者单位 | 1.Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan 2.Space Science Institute, Macau University of Science and Technology, Macau, People’s Republic of China; louclee@earth.sinica.edu.tw 3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing, People’s Republic of China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, People’s Republic of China 5.University of Chinese Academy of Sciences, Beijing, People’s Republic of China 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Xue,Z. K.,Yan,X. L.,Yang,L. H.,et al. Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface[J]. The Astrophysical Journal,2021,915(1). |
| APA | Xue,Z. K..,Yan,X. L..,Yang,L. H..,Chen,J..,Wang,J. C..,...&Lee,L. C..(2021).Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface.The Astrophysical Journal,915(1). |
| MLA | Xue,Z. K.,et al."Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface".The Astrophysical Journal 915.1(2021). |
入库方式： OAI收割
来源：国家天文台
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