Time and shape changes of the supergranular network |
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| Authors: | J Sýkora |
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| Institution: | (1) Astronomical Institute of the Slovak Academy of Sciences, Skalnaté Pleso, Czechoslovakia |
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| Abstract: | From 20 K232-spectroheliograms, time and shape changes of the supergranular network were investigated by means of autocorrelation curves. It was found that supergranules are lengthened in the direction of the solar rotation and this flattening fades out with growing activity of the region. Dimensions of the supergranular network increase with the activity of the corresponding region. The average diameter of the supergranules in the inactive regions is larger in the maximum of the solar cycle than in its minimum. The contrast of the calcium emission with respect to the background is double in the solar maximum in comparison with that in the minimum. |
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