Physics
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...85..113m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 85, May 1983, p. 113-121.
Physics
86
Faculae, Photosphere, Plasma Dynamics, Solar Granulation, Solar Magnetic Field, Solar Flux Density, Solar Spectra, Time Series Analysis
Scientific paper
A high resolution time series of pictures obtained at Pic du Midi Observatory is used to describe the evolution of facular points in the quiet sun, showing how their formation in the photosphere depends on both granular and supergranular patterns. Relative to the supergranular pattern, facular points appear at the supergranular boundaries, rarely inside the cells. Relative to the granulation pattern, they appear in spaces at the junction of several granules, never inside a granule nor in a space between two granules only. Their mean lifetime is 18 min and their size never significantly exceeds 0.5 arsec. They remain in intergranular lanes during their whole life and have a strong tendency to appear very close to an already existing facular point. Their formation appears to be very closely related to both granular and supergranular convective flows. Some possible consequences for the behavior of the associated magnetic flux tubes are discussed.
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