Solar-cycle-related Variation of Differential Rotation of the Chromosphere | |
Wan M(万苗)3,4; Gao PX(高朋鑫)1,2,4 | |
刊名 | ASTROPHYSICAL JOURNAL |
2022-11-01 | |
卷号 | 939期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac930d |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | Solar-cycle-related variation of the solar chromospheric rotation is studied by analyzing the chromospheric rotation rate of 938 synoptic maps generated from the Ca ii K line at the Mount Wilson Observatory during the period of 1915 August 10 to 1985 July 7. The results obtained are as follows: (1) The parameters A (the equatorial rotation rate) and B (the latitudinal gradient of rotation) in the standard form of differential rotation both show a decreasing trend in the considered time frame, although A has weak statistical significance. (2) There is a significant negative correlation between the level of solar activity and parameter B, indicating that there seems to be a correlation between field strength and chromospheric differential rotation. (3) During solar cycles 15, 16, 19, 20, and 21, the southern hemisphere rotates faster, whereas in cycles 17 and 18, the northern hemisphere rotates faster. (4) There exists a significant negative correlation between the N-S asymmetry of the chromospheric rotation rate and that of solar activity, indicating that differential rotation of the chromosphere seems to be strengthened by stronger magnetic activity in a certain hemisphere. Possible explanations for the above results are given. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
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[11973085] ; National Natural Science Foundation of China[11903077] ; Yunling-Scholar Project (the Yunnan Ten Thousand Talents Plan) ; Yunnan Fundamental Research Project[202201AS070042] ; Yunnan Fundamental Research Project[202101AT070019] ; National Project for Large-scale Scientific Facilities[2019YFA0405001] ; Chinese Academy of Sciences |
WOS关键词 | NORTH-SOUTH ASYMMETRY ; LONG-TERM VARIATIONS ; RAY BRIGHT POINTS ; CORONAL ROTATION ; TORSIONAL OSCILLATIONS ; MERIDIONAL MOTIONS ; MAGNETIC-FIELDS ; VELOCITY ; DEPENDENCE ; REGULARITY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000884376000001 |
资助机构 | National Natural Science Foundation of China[11973085, 11903077] ; Yunling-Scholar Project (the Yunnan Ten Thousand Talents Plan) ; Yunnan Fundamental Research Project[202201AS070042, 202101AT070019] ; National Project for Large-scale Scientific Facilities[2019YFA0405001] ; Chinese Academy of Sciences |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25650] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Wan M(万苗) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China; 3.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; wanmiao@ynao.ac.cn; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; gaopengxin@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Wan M,Gao PX. Solar-cycle-related Variation of Differential Rotation of the Chromosphere[J]. ASTROPHYSICAL JOURNAL,2022,939(2). |
APA | Wan M,&Gao PX.(2022).Solar-cycle-related Variation of Differential Rotation of the Chromosphere.ASTROPHYSICAL JOURNAL,939(2). |
MLA | Wan M,et al."Solar-cycle-related Variation of Differential Rotation of the Chromosphere".ASTROPHYSICAL JOURNAL 939.2(2022). |
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