Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987baicz..38..164k&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 38, June 1987, p. 164-180.
Astronomy and Astrophysics
Astronomy
1
Solar Activity, Sunspots, Visibility, Errors, Evolution (Development), Solar Terrestrial Interactions, Statistical Analysis
Scientific paper
The paper introduces a new mathematical technique "method of curves of evolution of diagram of the observational conditions of sunspot groups", describing changes in the form and characteristic structural elements of OC-diagram during the change of the real lifetime T of a sunspot group. The partially linear approximation of the time development of the area of sunspot groups has enabled an explicit solution of the method of curves of evolution of OC-diagram and its application to solving systematic mistakes of various methods of the determination of primary indices of sunspot activity (number of originated sunspot groups f0 and their mean lifetime T0) arising in consequence of the visibility function and observation once in 24 hours.
Kopecky Miloslav
Kuklin G. V.
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