Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet
文献类型：期刊论文
| 作者 | Cheng, X.1; Li, Y.2; Wan, L. F.1; Ding, M. D.1; Chen, P. F.1; Zhang, J.3 ; Liu, J. J.4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2018-10-10 |
| 卷号 | 866期号:1页码:14 |
| ISSN号 | 0004-637X |
| 关键词 | magnetic reconnection Sun: coronal mass ejections (CMEs) Sun: flares turbulence |
| DOI | 10.3847/1538-4357/aadd16 |
| 通讯作者 | Cheng, X.(xincheng@nju.edu.cn) |
| 英文摘要 | Magnetic reconnection is a fundamental physical process in various astrophysical, space, and laboratory environments. Many pieces of evidence for magnetic reconnection have been uncovered. However, its specific processes that could be fragmented and turbulent have been short of direct observational evidence. Here, we present observations of a super-hot current sheet during the SOL2017-09-10T X8.2-class solar flare that display the fragmented and turbulent nature of magnetic reconnection. As bilateral plasmas converge toward the current sheet, significant plasma heating and nonthermal motions are detected therein. Two oppositely directed outflow jets are intermittently expelled out of the fragmenting current sheet, whose intensity shows a power-law distribution in the spatial frequency domain. The intensity and velocity of the sunward outflow jets also display a power-law distribution in the temporal frequency domain. The length-to-width ratio of current sheet is estimated to be larger than the theoretical threshold and thus ensures its occurrence. The observations therefore suggest that fragmented and turbulent magnetic reconnection occurs in the long stretching current sheet. |
| WOS关键词 | CORONAL MASS EJECTION ; FLUX ROPE ; FLARE ; HINODE ; FIELD ; RESISTIVITY ; THICKNESS ; DYNAMICS ; ERUPTION ; DENSITY |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000447158200001 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/21189]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Cheng, X. |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China 2.Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 3.George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA 4.Univ Sheffield, Solar Phys & Space Plasma Res Ctr, Sch Math & Stat, Sheffield S3 7RH, S Yorkshire, England |
| 推荐引用方式 GB/T 7714 | Cheng, X.,Li, Y.,Wan, L. F.,et al. Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet[J]. ASTROPHYSICAL JOURNAL,2018,866(1):14. |
| APA | Cheng, X..,Li, Y..,Wan, L. F..,Ding, M. D..,Chen, P. F..,...&Liu, J. J..(2018).Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet.ASTROPHYSICAL JOURNAL,866(1),14. |
| MLA | Cheng, X.,et al."Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet".ASTROPHYSICAL JOURNAL 866.1(2018):14. |
入库方式： OAI收割
来源：紫金山天文台
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