Physics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...93..243o&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 93, July 1984, p. 243-255.
Physics
44
Astronomical Photography, Solar Activity, Solar Granulation, Autocorrelation, Brightness Distribution, Convection, Photosphere, Size Distribution, Spatial Distribution
Scientific paper
Kawaguchi's (1980) time-sequential photographs of the photospheric granule on a quiet region of the solar disk center are analyzed, with size variations of individual granules in the 54 x 52-arcsec photosphere area being traced over a period of 4 min. The granules are morphologically classified as active, quiet, or declining. The distribution of active granules reveals a cellular pattern. Attention is given to the relationship between the cellular pattern and brightness for the case of a quiet photosphere. Good spatial correlation is noted, and autocorrelation analysis indicates a photospheric intensity periodicity with 11.3-arcsec wavelength. The cellular pattern revealed by the chain of granules may be tentatively identified as mesogranulation, whose possible physical connection with the clumpy assemblage of active granules is briefly discussed.
Oda Nobuyuki
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