Differential rotation of solar magnetic fields
The connection between differential rotation of magnetic fields on the Sun and the sign and value of their strength was studied. The synoptic maps of the magnetic fields over the last three solar cycles taken at Kitt Peak Observatory served as a primary material for the study. The algorithm of magnetic field filtration over 14 chosen strength intervals and successive 5-degree latitude zones was applied to the primary data. Then the Fourier transformation was employed to the time series obtained. As a result of power spectra analysis the conclusion that there are two types of magnetic fields was obtained. These types differ in strength (0–50) Gs and (50–700) Gs and rotation characteristics. The rotation differentiation of the strong magnetic fields is almost twice as much as of the weak magnetic fields.
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