Detection of the Long-Term Microwave `Darkening' Before the 14 July 2000 Flare |
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| Authors: | Tokhchukova Susanna Bogod Vladimir |
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| Institution: | (1) National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China;(2) National Astronomical Observatories, CAS, China;(3) Astronomy Program, SEES, Seoul National University, Seoul, Korea;(4) United Laboratory of Optical Astronomy, CAS, China |
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| Abstract: | The latitudinal distribution of sunspot groups over a solar cycle is investigated. Although individual sunspot groups of a solar cycle emerge randomly at any middle and low latitude, the whole latitudinal distribution of sunspot groups of the cycle is not stochastic and, in fact, can be represented by a probability density function of the  distribution having maximum probability at about 15.5°. The maximum amplitude of a solar cycle is found to be positively correlated against the number of sunspot groups at high latitude ( 35°) over the cycle, as well as the mean latitude. Also, the relation between the asymmetry of sunspot groups and its latitude is investigated, and a pattern of the N-S asymmetry in solar activity is suggested. |
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