Helioseismic Solar Cycle Changes and Splitting Coefficients

Journal of astrophysics and astronomy

A. Bhatnagar¹  Kiran Jain¹  S. C. Tripathy¹ 

[1] Udaipur Solar Observatory, Physical Research Laboratory, PO Box No. 198, Udaipur 313 004, India.$$

关键词: Solar cycle;    rotation;    activity.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Using the GONG data for a period over four years, we have studied the variation of frequencies and splitting coefficients with solar cycle. Frequencies and even-order coefficients are found to change significantly with rising phase of the solar cycle. We also find temporal variations in the rotation rate near the solar surface.

【 授权许可】

Unknown