✦ LIBER ✦

Revealing of periodicities in the variations of differential rotation of the Sun

✍ Scribed by M. Sh. Gigolashvili; N. A. Gogoladze; E. V. Khutsishvili

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 593 KB
Volume: 316
Category: Article
ISSN: 0004-6337
DOI: 10.1002/asna.2103160505

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✦ Synopsis

It is presumed that a north-southern asymmetry of a solid-body rotation of large spots, depending on even and odd solar activity cycles (Gigolashvili and Khutsishvilil 1989, 1990) may possibly be explained by the asymmetry of the appearance of large structures with strong magnetic fields in the corresponding hemispheres. Spectral analysis of the observational data shows the presence of cyclic variations of differential rotation of large-and middle-sized spots. Variations of differential rotation of small spots are either absent or overlapped by noise. It is also supposed that the discovered and most frequently realized component of the spectrum of solar differential rotation variationsa four-years periodicitymay be either a real phenomenon or the result of overlapping of multiple quasi bi-annual variations.

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