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THE SUN'S SMALL-SCALE MAGNETIC ELEMENTS IN SOLAR CYCLE 23
Jin, C. L.1; Wang, J. X.1; Song, Q.1; Zhao, H.2
2011-04-10
Source PublicationASTROPHYSICAL JOURNAL
Volume731Issue:1
AbstractWith the unique database from the Michelson Doppler Imager on board the Solar and Heliospheric Observatory in an interval embodying solar cycle 23, the cyclic behavior of solar small-scale magnetic elements is studied. More than 13 million small-scale magnetic elements are selected, and the following results are found. (1) The quiet regions dominated the Sun's magnetic flux for about 8 years in the 12.25 year duration of cycle 23. They contributed (0.94-1.44) x 10(23) Mx flux to the Sun from the solar minimum to maximum. The monthly average magnetic flux of the quiet regions is 1.12 times that of the active regions in the cycle. (2) The ratio of quiet region flux to that of the total Sun equally characterizes the course of a solar cycle. The 6 month running average flux ratio of the quiet regions was larger than 90.0% for 28 continuous months from July 2007 to October 2009, which very well characterizes the grand solar minima of cycles 23-24. (3) From the small to the large end of the flux spectrum, the variations of numbers and total flux of the network elements show no correlation, anti-correlation, and correlation with sunspots, respectively. The anti-correlated elements, covering the flux of (2.9-32.0) x 10(18) Mx, occupy 77.2% of the total element number and 37.4% of the quiet-Sun flux. These results provide insight into the reason for anti-correlations of small-scale magnetic activity during the solar cycle.
KeywordSun: Activity Sun: Dynamo Sun: Photosphere Sun: Surface Magnetism Sunspots
DOI10.1088/0004-637X/731/1/37
Indexed BySCI
Language英语
WOS IDWOS:000289772800037
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7853
Collection太阳物理研究部
Affiliation1.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
2.Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan
Recommended Citation
GB/T 7714
Jin, C. L.,Wang, J. X.,Song, Q.,et al. THE SUN'S SMALL-SCALE MAGNETIC ELEMENTS IN SOLAR CYCLE 23[J]. ASTROPHYSICAL JOURNAL,2011,731(1).
APA Jin, C. L.,Wang, J. X.,Song, Q.,&Zhao, H..(2011).THE SUN'S SMALL-SCALE MAGNETIC ELEMENTS IN SOLAR CYCLE 23.ASTROPHYSICAL JOURNAL,731(1).
MLA Jin, C. L.,et al."THE SUN'S SMALL-SCALE MAGNETIC ELEMENTS IN SOLAR CYCLE 23".ASTROPHYSICAL JOURNAL 731.1(2011).
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