• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/032/01-02/0265-0268

    • Keywords

       

      Solar cycle; supergranulation; fractal dimension.

    • Abstract

       

      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.

    • Author Affiliations

       

      U. Paniveni1 2 V. Krishan2 J. Singh2 R. Srikanth3 4

      1. NIE Institute of Technology, Mysore, India.
      2. Indian Institute of Astrophysics, Bangalore, India.
      3. Poornaprajna Institute of Research, 4 Sadashivnagar, Bangalore, India.
      4. Optics Group, Raman Research Institute, Bangalore, India.
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.