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Temporal Variation of Solar Coronal Rotation
Xie, J. L.; Shi, X. J.; Zhang, J.; Xie, JL (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.; Xie, JL (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.; Xie, JL (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.; Xie, JL (reprint author), Chinese Acad Sci, Ctr Astron Mega Sci, Beijing 100012, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2017
Volume841Issue:1Pages:42
ISSN0004-637X
Language英语
KeywordMethods: Data Analysis Sun: Corona Sun: Rotation
AbstractIn this paper, by applying the wavelet transformation analysis to the data of the daily 10.7 cm radio flux covering the period from 1947 February 14 to 2014 August 31, a significant period of about 27 days can be found, indicating the existence of rotational modulation in the temporal variation of the daily 10.7 cm radio flux. Then, the solar coronal rotation periods are obtained based on the result of the wavelet transformation analysis, and the temporal variation of the coronal rotation is revisited. We find that there exist significant periods of about 2.1, 3.0, 4.5, 6.6, 8.6, and 10.3 yr in the temporal variation of the coronal rotation. A possible period of 22.0 yr can also be found, but its statistical significance is below the 95% confidence level. The coronal rotation seems to show a weak decreasing trend during the considered time. The dependence of the coronal rotation on solar cycle phase is analyzed. The rotation periods are found to be varying with the solar cycle phase, and they are relatively longer around the minimum year of the solar cycle. The result based on the cross-correlation analysis between the rotation periods and the daily 10.7 cm radio flux indicates that there exists a phase difference of about 5.5 yr between them.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6013
Collection空间科学部
Corresponding AuthorXie, JL (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.; Xie, JL (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.; Xie, JL (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.; Xie, JL (reprint author), Chinese Acad Sci, Ctr Astron Mega Sci, Beijing 100012, Peoples R China.
Recommended Citation
GB/T 7714
Xie, J. L.,Shi, X. J.,Zhang, J.,et al. Temporal Variation of Solar Coronal Rotation[J]. ASTROPHYSICAL JOURNAL,2017,841(1):42.
APA Xie, J. L..,Shi, X. J..,Zhang, J..,Xie, JL .,Xie, JL .,...&Xie, JL .(2017).Temporal Variation of Solar Coronal Rotation.ASTROPHYSICAL JOURNAL,841(1),42.
MLA Xie, J. L.,et al."Temporal Variation of Solar Coronal Rotation".ASTROPHYSICAL JOURNAL 841.1(2017):42.
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