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ON THE VARIATION OF SOLAR RADIUS IN ROTATION CYCLES
Qu ZN(屈智宁)1,2,3; Kong DF(孔德芳)1,2,3; Xiang NB(向南彬)1,2,3; Feng, W.4,5
Source PublicationASTROPHYSICAL JOURNAL
2015-01-10
Volume798Issue:2Pages:113-119
DOI10.1088/0004-637X/798/2/113
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Fundamental Parameters Sun: Magnetic Fields Sun: Rotation
Abstract

The Date Compensated Discrete Fourier Transform and CLEANest algorithm are used to study the temporal variations of the solar radius observed at Rio de Janeiro Observatory from 1998 March 2 to 2009 November 6. The CLEANest spectra show several significant periodicities around 400, 312, 93.5, 86.2, 79.4, 70.9, 53.2, and 26.3 days. Then, combining the data on the daily solar radius measured at Calern Observatory and Rio de Janeiro Observatory and the corresponding daily sunspot areas, we study the short-term periodicity of the solar radius and the role of magnetic field in the variation of the solar radius. The rotation period of the daily solar radius is determined to be statistically significant. Moreover, its temporal evolution is anti-phase with that of sunspot activity, and it is found anti-phase with solar activity. Generally, the stronger solar activity is, the more obvious is the anti-phase relation of radius with solar activity. This indicates that strong magnetic fields have a greater inhibitive effect than weak magnetic fields on the variation of the radius.

Funding ProjectNational Natural Science Foundation of China[11221063] ; National Natural Science Foundation of China[11273057] ; 973 programs[2012CB957801] ; 973 programs[2011CB811406] ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University)
Funding OrganizationNational Natural Science Foundation of China[11221063, 11273057] ; 973 programs[2012CB957801, 2011CB811406] ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University)
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 Date2015-01-09
WOS IDWOS:000350853700048
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIAMETER MEASUREMENTS ; DIFFERENTIAL ROTATION ; TERM PERIODICITIES ; CONVECTION ZONE ; SUNSPOT NUMBERS ; CALERN SITE ; ASTROLABE ; CONSTANCY ; DYNAMO ; SUN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6275
Collection太阳物理研究组
Corresponding AuthorQu ZN(屈智宁)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
4.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
5.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education, Nanjing 210093, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qu ZN,Kong DF,Xiang NB,et al. ON THE VARIATION OF SOLAR RADIUS IN ROTATION CYCLES[J]. ASTROPHYSICAL JOURNAL,2015,798(2):113-119.
APA Qu ZN,Kong DF,Xiang NB,&Feng, W..(2015).ON THE VARIATION OF SOLAR RADIUS IN ROTATION CYCLES.ASTROPHYSICAL JOURNAL,798(2),113-119.
MLA Qu ZN,et al."ON THE VARIATION OF SOLAR RADIUS IN ROTATION CYCLES".ASTROPHYSICAL JOURNAL 798.2(2015):113-119.
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