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The Correlation between the Magnetic and Velocity Fields on the Full Solar Disk
Zhao, M. Y.; Wang, X. F.; Zhang, H. Q.
2011-05-01
Source PublicationSOLAR PHYSICS
Volume270Issue:1Pages:23-33
AbstractA possible correlation between the magnetic and velocity fields has been analyzed based on the SOHO/MDI magnetograms and Dopplergrams. It is found that the observed large-scale weak magnetic field (weaker than 50 G (gauss)) is correlated with the velocity statistically. The curves of u . b with latitude, where u and b are the velocity and magnetic fields in a rectangular region (+/- 15(degrees) in longitude, +/- 45(degrees) in latitude) on the Sun, show the same patterns in the years 2000, 2004, and 2007. The patterns indicate that u and b are positively correlated near the equator but are anti-correlated at the middle latitudes. For a strong magnetic field between 50 G and 3000 G, the curves of u . b with latitude show the same tendencies at the middle latitudes. Near the equator, however, the slope of the curve is positive in 2000 and is negative in 2004 and 2007. In addition, we give an estimation for the amplitude of the cross helicity h (chi) (h(chi) = (u . b) over bar) inferred from the MDI data, which is of the order of 10(3) G m s(-1) near the center of the solar disk.
KeywordActivity Magnetic Topology Photosphere
DOI10.1007/s11207-011-9742-5
Indexed BySCI
Language英语
WOS IDWOS:000290447400003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7858
Collection太阳物理研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhao, M. Y.,Wang, X. F.,Zhang, H. Q.. The Correlation between the Magnetic and Velocity Fields on the Full Solar Disk[J]. SOLAR PHYSICS,2011,270(1):23-33.
APA Zhao, M. Y.,Wang, X. F.,&Zhang, H. Q..(2011).The Correlation between the Magnetic and Velocity Fields on the Full Solar Disk.SOLAR PHYSICS,270(1),23-33.
MLA Zhao, M. Y.,et al."The Correlation between the Magnetic and Velocity Fields on the Full Solar Disk".SOLAR PHYSICS 270.1(2011):23-33.
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