Solar Cycle Phase Dependence of Supergranular Fractal Dimension

Journal of astrophysics and astronomy

V. Krishan³  J. Singh³  R. Srikanth3¹  U. Paniveni1 2² 

[1] Poornaprajna Institute of Research, 4 Sadashivnagar, Bangalore, India.$$;NIE Institute of Technology, Mysore, India.$$;Indian Institute of Astrophysics, Bangalore, India.$$

关键词: Solar cycle;    supergranulation;    fractal dimension.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

We study the complexity of supergranular cells using the intensity patterns obtained from the Kodaikanal Solar Observatory during the 23rd solar cycle. Our data consists of visually identified supergranular cells, from which a fractal dimension 𝐷 for supergranulation is obtained according to the relation 𝑃 ∝ 𝐴𝐷/2, where 𝐴 is the area and 𝑃 is the perimeter of the supergranular cells. We find a difference in the fractal dimension between active and quiet region cells in the ascending phase, during the peak and in the descending phase which is conjectured to be due to the magnetic activity level.

【 授权许可】

Unknown