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Journal of Automation and Information Sciences
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Journal of Automation and Information Sciences

DOI: 10.1615/JAutomatInfScien.v43.i9.60
pages 68-83

Laws of the Evolution of Large-Scale Magnetic Fields in the Sun by Observations Data

Yarema I. Zyelyk
Institute of Space Research of National Academy of Sciences of Ukraine and National Space Agency of Ukraine, Kyiv, Ukraine
Nataliya N. Stepanyan
Research Institute "Crimean Astrophysical Observatory" of Ministry of Education and Science of Ukraine, Crimea, settlement Nauchnyi of Bakhchisaraiskiy region
Olga A. Andryeyeva
Research Institute "Crimean Astrophysical Observatory" of Ministry of Education and Science of Ukraine, Crimea, settlement Nauchnyi of Bakhchisaraiskiy region

ABSTRACT

On the basis of the observations data the evolution of large-scale solar magnetic fields during three solar cycles was investigated and the general picture of changing the solar cycles of weak photospheric and strong (in active regions) fields was determined. It has been found that in addition to significant differences in the evolution of weak and strong magnetic fields there is a close relationship of their behavior in the separated out strength intervals, if the growth rate of the total flow field is considered as a characteristic for comparing. At present there is no well-reasoned theoretical explanation of the found in the article connection, and the problem of its interpretation is a subject of a separate research.