Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?
文献类型：期刊论文
| 作者 | Li,K. J.1,2,3; Xu,J. C.1,2,3; Yin,Z. Q.3; Feng,W.4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-04-19 |
| 卷号 | 875期号:2 |
| 关键词 | Sun: atmosphere Sun: corona Sun: rotation |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab0f3a |
| 英文摘要 | Abstract Coronal heating is a big question for modern astronomy. Daily measurement of 985 solar spectral irradiances (SSIs) at the spectral intervals 1–39 and 116–2416 nm during 2003 March 1 to 2017 October 28 is utilized to investigate characteristics of solar rotation in the solar atmosphere by means of the Lomb–Scargle periodogram method to calculate their power spectra. The rotation period of coronal plasma is determined to be 26.3 days, and that of the solar atmosphere at the bottom of the photosphere modulated by magnetic structures is 27.5 days. Here we report for the first time that, unexpectedly, the coronal atmosphere is found to rotate faster than the underlying photosphere. When time series of SSIs are divided into different cycles as well as the ascending and descending periods of a solar cycle, the rotation rate in the corona is also found to be larger than that in the photosphere, and this actually uncovers hidden evidence: it is small-scale magnetic activity that heats the corona. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-875-2-AB0F3A |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/26177]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Yunnan Observatories, CAS, Kunming 650011, People’s Republic of China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 3.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, People’s Republic of China 4.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, People’s Republic of China fengwen69@sina.cn |
| 推荐引用方式 GB/T 7714 | Li,K. J.,Xu,J. C.,Yin,Z. Q.,et al. Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?[J]. The Astrophysical Journal,2019,875(2). |
| APA | Li,K. J.,Xu,J. C.,Yin,Z. Q.,&Feng,W..(2019).Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?.The Astrophysical Journal,875(2). |
| MLA | Li,K. J.,et al."Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?".The Astrophysical Journal 875.2(2019). |
入库方式： OAI收割
来源：国家天文台
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