Differential Rotation of the Chromosphere in the He I Absorption Line
文献类型：期刊论文
| 作者 | Li,K. J.2,3,4; Xu,J. C.2; Xie,J. L.2,4; Feng,W.1 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 905期号:1 |
| 关键词 | Solar rotation Solar chromosphere Solar activity |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/abcb84 |
| 英文摘要 | Abstract Differential rotation is the basis of the solar dynamo theory. Synoptic maps of He I intensity from Carrington rotations 2032–2135 are utilized to investigate the differential rotation of the solar chromosphere in the He I absorption line. The chromosphere is surprisingly found to rotate faster than the photosphere below it. The anomalous heating of the chromosphere and corona has been a big problem in modern astronomy. It is speculated that the small-scale magnetic elements with magnetic flux in the range of (2.9–32.0)?×?1018 Mx, which are anchored in the leptocline, heat the quiet chromosphere to present the anomalous temperature increase, causing it to rotate at the same rate as the leptocline. The differential of rotation rate in the chromosphere is found to be strengthened by strong magnetic fields, but in stark contrast, at the photosphere strong magnetic fields repress the differential of rotation rate. A plausible explanation is given for these findings. |
| 语种 | 英语 |
| WOS记录号 | IOP:2041-8205-905-1-ABCB84 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57895]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, People's Republic of China; fengwen69@sina.cn 2.Yunnan Observatories, CAS, Kunming 650011, People's Republic of China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 4.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Li,K. J.,Xu,J. C.,Xie,J. L.,et al. Differential Rotation of the Chromosphere in the He I Absorption Line[J]. The Astrophysical Journal Letters,2020,905(1). |
| APA | Li,K. J.,Xu,J. C.,Xie,J. L.,&Feng,W..(2020).Differential Rotation of the Chromosphere in the He I Absorption Line.The Astrophysical Journal Letters,905(1). |
| MLA | Li,K. J.,et al."Differential Rotation of the Chromosphere in the He I Absorption Line".The Astrophysical Journal Letters 905.1(2020). |
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来源：国家天文台
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