Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...392l..13r&link_type=abstract
Astronomy and Astrophysics, v.392, p.L13-L15 (2002)
Astronomy and Astrophysics
Astrophysics
12
Solar Photosphere, Granulation, Convection Patterns
Scientific paper
A recent Letter to the Editor (Getling & Brandt \cite{getling02}) suggests that solar granulation is not entirely random, instead showing large scale spatial and long term temporal coherence. The authors cite as evidence the persistence of bright granular size objects in images even after long term temporal averaging, the reoccurrence of bright granules in time series at locations of local maxima in the average image, and the presence of large scale regular structures in time-average images. This paper demonstrates that all three of these observations are consistent with a completely random and changing flow pattern and do not require self organization of the granular flows.
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