Structure of the solar granulation.

Details Structure of the solar granulation. Structure of the solar granulation.

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..107...11r&link_type=abstract

Solar Physics, Volume 107, Issue 1, pp.11-26

Physics

20

Solar Granulation:Structure

Scientific paper

The structure of the solar granulation has been analysed using computer-processed images of two very high resolution (0arcsec.25) white-light pictures obtained at the Pic-du-Midi Observatory. The narrow dispersion in the distribution of granule sizes is not confirmed. On the contrary, it is found that the number of granules increases continuously toward smaller scales; this means that the solar granulation has no characteristic or mean scale. Nevertheless, the granules appear to have a critical scale of 1arcsec.37, at which drastic changes in the properties of granules occur; in particular the fractal dimension changes at the critical scale. The granules smaller than this scale could be of turbulent origin.

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