Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere? | |
Li KJ(李可军)1,2,3; Xu JC(徐景晨)1,2,3![]() | |
刊名 | ASTROPHYSICAL JOURNAL
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2019-04-20 | |
卷号 | 875期号:2页码:12 |
关键词 | Sun: atmosphere Sun: corona Sun: rotation |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab0f3a |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 太阳与太阳系 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11573065] ; Chinese Academy of Sciences |
WOS关键词 | DIFFERENTIAL ROTATION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000465444000012 |
资助机构 | National Natural Science Foundation of China[11633008, 11573065] ; Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/19702] ![]() |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Feng, W. |
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 |
推荐引用方式 GB/T 7714 | Li KJ,Xu JC,Yin, Z. Q.,et al. Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?[J]. ASTROPHYSICAL JOURNAL,2019,875(2):12. |
APA | Li KJ,Xu JC,Yin, Z. Q.,&Feng, W..(2019).Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?.ASTROPHYSICAL JOURNAL,875(2),12. |
MLA | Li KJ,et al."Why Does the Solar Corona Abnormally Rotate Faster Than the Photosphere?".ASTROPHYSICAL JOURNAL 875.2(2019):12. |
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