Abstract
A gradient based algorithm which divides arbitrary images into non-overlapping surface filling tiles of opposite polarity is used to study the flux and size distributions of large scale magnetic flux concentrations in solar and heliospheric observatory (SoHO) magnetograms. The mean absolute flux and size of the concentrations at the considered scale is found to be about 1.7 × 1018Mx and 5.2Mm for both polarities. The form of the flux distribution is characterized by a skewness of α3 = 4.9 and a kurtosis of α4 = 42.8. The fall in the distribution in the range 6.5 × 1017 Mx to 5×1018 Mx is described by an exponential fit, in agreement with a model for the sustenance of quiet region flux.
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