中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The Rotation of the Solar Photospheric Magnetic Field

文献类型:期刊论文

作者Xu JC(徐景晨)1,2,3,4; Gao PX(高朋鑫)1,4
刊名ASTROPHYSICAL JOURNAL
出版日期2016-12-20
卷号833期号:2
ISSN号0004-637X
关键词Sun: Activity Sun: Magnetic Fields Sun: Photosphere Sun: Rotation
DOI10.3847/1538-4357/833/2/144
产权排序第1完成单位
文献子类Article
英文摘要

The rotational characteristics of the solar photospheric magnetic field at four flux ranges are investigated together with the total flux of active regions (MFar) and quiet regions (MFqr). The first four ranges (MF1-4) are (1.5-2.9) × 1018, (2.9-32.0) × 1018, (3.20-4.27) × 1019, and (4.27-38.01) × 1019, respectively (the unit is Mx per element). Daily values of the flux data are extracted from magnetograms of the Michelson Doppler Imager on board the Solar and Heliospheric Observatory. Lomb-Scargle periodograms show that only MF2, MF4, MFqr, and MFar exhibit rotational periods. The periods of the first three types of flux are very similar, i.e., 26.20, 26.23, and 26.24 days, respectively, while that of MFar is longer, 26.66 days. This indicates that active regions rotate more slowly than quiet regions on average, and strong magnetic fields tend to repress the surface rotation. Sinusoidal function fittings and cross-correlation analyses reveal that MFar leads MF2 and MF4 by 5 and 1 days, respectively. This is speculated to be related with the decaying of active regions. MF2 and MFar are negatively correlated, while both MF4 and MFqr are positively correlated with MFar. At the timescale of the solar activity cycle, MFar leads (negatively) MF2 by around one year (350 days), and leads MF4 by about 3 rotation periods (82 days). The relation between MF2 and MFar may be explained by the possibility that the former mainly comes from a higher latitude, or emerges from the subsurface shear layer. We conjecture that MF4 may partly come from the magnetic flux of active regions; this verifies previous results that were obtained with indirect solar magnetic indices.

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
WOS关键词MICHELSON DOPPLER IMAGER ; LOMB-SCARGLE PERIODOGRAM ; DIFFERENTIAL ROTATION ; CYCLE 23 ; IRRADIANCE VARIATIONS ; SPECTRAL-ANALYSIS ; CONVECTION ZONE ; SUNSPOT GROUPS ; LEAST-SQUARES ; HIGH-LATITUDE
资助项目National Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11273057] ; National Natural Science Foundation of China[11673061] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences ; Applied Basic Research Foundation of Yunnan Province, China[2014FB190]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000391169600019
资助机构National Natural Science Foundation of China[11573065, 11633008, 11273057, 11673061] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences ; Applied Basic Research Foundation of Yunnan Province, China[2014FB190]
源URL[http://ir.ynao.ac.cn/handle/114a53/9850]  
专题云南天文台_太阳物理研究组
通讯作者Xu JC(徐景晨)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China
4.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
推荐引用方式
GB/T 7714
Xu JC,Gao PX. The Rotation of the Solar Photospheric Magnetic Field[J]. ASTROPHYSICAL JOURNAL,2016,833(2).
APA Xu JC,&Gao PX.(2016).The Rotation of the Solar Photospheric Magnetic Field.ASTROPHYSICAL JOURNAL,833(2).
MLA Xu JC,et al."The Rotation of the Solar Photospheric Magnetic Field".ASTROPHYSICAL JOURNAL 833.2(2016).

入库方式: OAI收割

来源:云南天文台

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