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Phase Relationship Between Sunspot Number, Flare Index and Solar Radio Flux
Yan XL(闫晓理)1,2; Deng LH(邓林华)1; Qu ZQ(屈中权)1; Xu, CL3; Kong DF(孔德芳)1; Yan, XL (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Source PublicationJOURNAL OF ASTROPHYSICS AND ASTRONOMY
2012-12
Volume33Issue:4Pages:387-397
DOI10.1007/s12036-012-9153-5
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Sunspot Flare Index Solar Radio Flux Solar Cycle
AbstractTo understand better the variation of solar activity indicators originated at different layers of the solar atmosphere with respect to sunspot cycles, we carried out a study of phase relationship between sunspot number, flare index and solar radio flux at 2800 MHz from January 1966 to May 2008 by using cross-correlation analysis. The main results are as follows: (1) The flare index and sunspot number have synchronous phase for cycles 21 and 22 in the northern hemisphere and for cycle 20 in the southern hemisphere. (2) The flare index has a noticeable time lead with respect to sunspot number for cycles 20 and 23 in the northern hemisphere and for cycles 22 and 23 in the southern hemisphere. (3) For the entire Sun, the flare index has a noticeable time lead for cycles 20 and 23, a time lag for cycle 21, and no time lag or time lead for cycle 22 with respect to sunspot number. (4) The solar radio flux has a time lag for cycles 22 and 23 and no time lag or time lead for cycles 20 and 21 with respect to sunspot number. (5) For the four cycles, the sunspot number and flare index in the northern hemisphere are all leading to the ones in the southern hemisphere. These results may be instructive to the physical processes of flare energy storage and dissipation.
Funding OrganizationNational Science Foundation of China (NSFC) [10903027, 11078005, 10943002] ; Yunnan Science Foundation of China [2009CD120] ; China's 973 project [G2011CB811400]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0250-6335
URL查看原文
Archive Date2012-12-28
WOS IDWOS:000313608600004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordASYMMETRY ; CYCLE ; SOLAR-CYCLE-23 ; MODULATION ; POLARITY ; REGIONS ; SUN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6186
Collection太阳物理研究组
Corresponding AuthorYan, XL (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
3.School of Mathematics, Yunnan Normal University, Yunnan, Kunming, 650092, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yan XL,Deng LH,Qu ZQ,et al. Phase Relationship Between Sunspot Number, Flare Index and Solar Radio Flux[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2012,33(4):387-397.
APA Yan XL,Deng LH,Qu ZQ,Xu, CL,Kong DF,&Yan, XL .(2012).Phase Relationship Between Sunspot Number, Flare Index and Solar Radio Flux.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,33(4),387-397.
MLA Yan XL,et al."Phase Relationship Between Sunspot Number, Flare Index and Solar Radio Flux".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 33.4(2012):387-397.
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