Quasi-regular structures of the solar photosphere

Details Quasi-regular structures of the solar photosphere Quasi-regular structures of the solar photosphere

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..617g&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

Solar Photosphere, Granulation, Convection Patterns

Scientific paper

As we already reported, the simple procedure of time averaging, when applied to the photospheric brightness field, reveals quasi-regular structures of the photospheric and subphotospheric flows. Our analysis presented here shows that the decrease in the rms contrast of the averaged images with the increase of the averaging time τ is slower compared to the √τ law, which argues for the real persistence of the revealed structures as physical entities. The procedure of running-average-based correlation is suggested to seek coherence between the brightness variations at the points of emergence and sinking of granules. Some results of the correlation analysis confirm the notion that granules are overheated blobs of material carried by the convective circulation.

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