학술논문
Development of sunspot groups related to the solar differential rotation during the early period of a new solar cycle
Document Type
TEXT
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Source
Subject
Language
Czech
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Multiple languages
Abstract
The 'Debrecen Photoheliographlc Results’ beginnlng with the year 1977 gives various kinds of posltion and area data of sunspots dally for a single moment, includlng all spot groups vlsible at leaston two days.In addition, thls catalogue also indicates tlie magnetlc spot polarities and for each sunspot, wherever reasonable, a special number as a mark of Identification. By these means special features of the spot activity of 1977 have been studied. So, diverse spot distributions and the principal spot motions within the groups, as well as the local solar rotatlon in several regions of spot groups by means of tracers of spot positions have been determlned. The most important characteristlcs found are presented.