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Sunspot groups at high latitude

✍ Scribed by Li Kejun; Gu Xiaoma; Xiang Fuyuan; Liu Xiaohua; Chen Xuekun


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
125 KB
Volume
317
Category
Article
ISSN
0035-8711

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The N-S drift of sunspot groups has been studied in a different way than previously, using positions of recurrent groups of the years 1874-1976. The existence of the meridional motions, the general shape of the drift curves, and the dissimilarity between these curves around sunspot maxima and minima

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We report measurements of the sunspot rotation rate at high sunspot latitutdes for the years 1966-1968. Ten spots at [latitude[-> 28 deg were found in our Mees Solar Observatory Ha patrol records for this period that are suitable for such a study. On the average we find a sidereal rotation rate of 1