A forecast of solar activity for the 21s
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J. Xanthakis; C. Poulakos
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Article
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1978
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Springer
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English
β 143 KB
Predicted values of some main indices of solar activity for the 21st solar cycle are given. The epoch of maximum of solar activity has been placed in 1980.8 + 0.1. The predicted peak values of the relative sunspot numbers published by other authors are also given.