• Title of article

    Multifractal spectrum of solar active region NOAA 10960 in the Ha spectral line

  • Author/Authors

    Batmunkh D.، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2009
  • Pages
    6
  • From page
    66
  • To page
    71
  • Abstract
    We obtained the Ha images of some solar active regions and prominences. Our astronomical observatory has the telescope-coronagraph which was equipped with the birefringent Halle Ha filter and CCD camera Apogee U4 (2048x2048 pixels). This paper presents multifractal spectra of images of some solar active regions in Ha line obtained with the coronagraph. The Pointwise Hoelder exponents (a) and Hausdorff spectrum fn (a) for a part of chromosphere with active region and without it, have been obtained. It is visible, that curves fn (a) for quiet and active regions of chromosphere differ very strongly. In particular, fn (a) for region with a sunspot and flare has very complicated form, and for region with filament the curves do not considerably differ from quiet chromosphere. The multifractal spectrum of quiet chromosphere shows that the quiet chromosphere is very well described by fractals with different dimensions. We analyze this result.
  • Keywords
    Sun: atmosphere , flares , Multifractal spectrum , activity
  • Journal title
    Proceedings of the International Astronomical Union
  • Serial Year
    2009
  • Journal title
    Proceedings of the International Astronomical Union
  • Record number

    673112