Spatial pattern of photospheric granules in a sunspot neighborhood |
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| Authors: | Ernesto R Rodríguez Flores Rafael Gmez Díaz Ramn E Rodríguez Taboada |
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| Institution: | Instituto de Geofísica y Astronomía, Calle 212, No. 2906, La Lisa, La Habana, Cuba |
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| Abstract: | Based on high-resolution (0.3 arcsec) observations, we studied the behavior of solar granulation in the neighborhood of a sunspot. The bright granules’ spatial distribution and the granules’ surface density as a function of distance from the center of the sunspot umbra were determined.Bright granules distribute delimiting cells of dimensions in the mesogranular scale. The mean diameter of these cells does not show significant variation with the variation of the magnetic field of the sunspot. The granules’ surface density does not show significant variation with distance to the sunspot umbra. Both results point to a very weak, if any, influence of the sunspot magnetic field at distances greater than 20 arcsec. |
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| Keywords: | Solar granulation Photospheric granules Convection Sunspots |
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