Phase Relationship Between Sunspot Number, Flare Index and Solar Radio Flux

Journal of astrophysics and astronomy

D. F. Kong¹  L. H. Deng¹  Z. Q. Qu¹  C. L. Xu²  X. L. Yan1 2¹ 

[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.$$;For the entire Sun, the flare index has a noticeable time lead for cycles 20 and 23, a time lag for cycle 21, and no time lag or time lead for cycle 22 with respect to sunspot number.$$

关键词: Sun: sunspot;    flare index;    solar radio flux;    solar cycle.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

To 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: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.

【 授权许可】

Unknown