Astronomy and Astrophysics – Astronomy
Scientist
Astronomy and Astrophysics
Astronomy
Scientist
Ceskoslovenska Akademie Ved, Astronomicky Ustav, Ondrejov, Czechoslovakia
Czechoslovak Academy of Sciences, Astronomical Institute, Ondrejov, Czechoslovakia
Number of SPOT groups formed and their average lifetime in solar activity cycle No. 20
Recurrent sunspot groups and the visibility function
The visibility function and its effect on the observed characteristics of sunspot groups. IX - How many sunspot groups do we not observe in consequence of the visibility function?
The visibility function and its effect on the observed characteristics of sunspot groups. VII - The effect of the change of the curve of sunspot area development on the observed characteristics of sunspot groups
The visibility function and its effect on the observed characteristics of sunspot groups. X - The east-west asymmetry of the appearance and disappearance of sunspot groups: Solution using the diagrams of observational conditions of sunspot groups
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