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Chinese Academy of Sciences Institutional Repositories Grid
Differential Rotation of the Chromosphere in the He I Absorption Line

文献类型:期刊论文

AuthorLi,K. J.1,2,3; Xu,J. C.1; Xie,J. L.1,3; Feng,W.4
SourceThe Astrophysical Journal Letters
Issued Date2020-12-01
Volume905Issue:1
KeywordSolar rotation Solar chromosphere Solar activity
ISSN2041-8205
DOI10.3847/2041-8213/abcb84
Corresponding AuthorLi,K. J.()
English AbstractAbstract 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.
Language英语
PublisherThe American Astronomical Society
WOS IDIOP:2041-8205-905-1-ABCB84
源URL[http://ir.ynao.ac.cn/handle/114a53/24012]  
Collection云南天文台_抚仙湖太阳观测站
Corresponding AuthorLi,K. J.
Affiliation1.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
Recommended Citation
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:云南天文台

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