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The Rotation of the Solar Photospheric Magnetic Field
Xu JC(徐景晨)1,2,3,4; Gao PX(高朋鑫)1,4
Source PublicationASTROPHYSICAL JOURNAL
2016-12-20
Volume833Issue:2
DOI10.3847/1538-4357/833/2/144
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Magnetic Fields Sun: Photosphere Sun: Rotation
Abstract

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.

Funding ProjectNational 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]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
Archive Date2016-12-16
WOS IDWOS:000391169600019
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMICHELSON DOPPLER IMAGER ; LOMB-SCARGLE PERIODOGRAM ; DIFFERENTIAL ROTATION ; CYCLE 23 ; IRRADIANCE VARIATIONS ; SPECTRAL-ANALYSIS ; CONVECTION ZONE ; SUNSPOT GROUPS ; LEAST-SQUARES ; HIGH-LATITUDE
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9850
Collection太阳物理研究组
Corresponding AuthorXu JC(徐景晨)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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).
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