Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61..163b&link_type=abstract
(Astronomicheskii Zhurnal, vol. 61, Jan.-Feb. 1984, p. 163-169) Soviet Astronomy (ISSN 0038-5301), vol. 28, Jan.-Feb. 1984, p. 9
Astronomy and Astrophysics
Astronomy
1
Secular Variations, Solar Cycles, Statistical Analysis, Sunspot Cycle, Correlation Coefficients, Regression Analysis
Scientific paper
The time dependences of Wolf numbers in the available 11-year cycles of solar activity by use of the method of linear two-parameter regression analysis and of its subsequent extension are calculated. The parameters of the cycles are determined and then compared. The period of the long (the 80-year) solar cycle corresponding to the maximal total correlation coefficient and to the minimal standard deviation has been numerically determined. Thereby the parameters of the long cycles of solar activity characterized by Wolf numbers are calculated. The long solar cycle with the period 82.8 - 84.8 years has been proved to be statistically significant. On the basis of the data on smoothed maxima of Wolf numbers in individual 11-year solar cycles the existence of the long solar cycles with periods 87.2 and 81.8 years has been statistically proved as well.
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