Morphological Study of the Solar Granulation - Part Three - the Mesogranulation
Abstract
Time-sequential high quality photographs of the photospheric granule on a quiet region of the disc center obtained at the Pic-du-Midi Observatory by Kawaguchi are analyzed. The size variation of individual granules in the area of 54″×52″ on the photosphere are traced over a period of 4 min. The granules are classified according to their morphological features as follows. (1) Active granules, they repeat the expansion and the fragmentation. (2) Quiet granules, they do not alter the size noticeably during the observed time span. (3) Declining granules, they disappear without further fragmentation or merging.
- Publication:
-
Solar Physics
- Pub Date:
- July 1984
- DOI:
- 10.1007/BF02270837
- Bibcode:
- 1984SoPh...93..243O
- Keywords:
-
- Astronomical Photography;
- Solar Activity;
- Solar Granulation;
- Autocorrelation;
- Brightness Distribution;
- Convection;
- Photosphere;
- Size Distribution;
- Spatial Distribution;
- Solar Physics;
- Autocorrelation;
- Spatial Correlation;
- Morphological Study;
- Disc Center;
- Autocorrelation Analysis