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- W2021121573 abstract "view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Successful result of a prediction of sunspots. Stewart, John Q. Abstract Jn papers published in the Aslrophysical Journal a thorough description was given of methods of representing Wolf numbers for each I I-year cycle or outburst of sunspots by a curve of the form Flae-bt, the time I being counted from the assumed epoch of the beginning of the particular outburst. A prediction of the course of the latter half of cycle 17 was published in a paper by the author and F. C. Eggleston.1 It is now evident that the prediction was successful within about the expected tolerance. The predicted annual numbers for 1939, 1940, 1941, 1942, 1943, 1944, respectively, were 87, 6i, 38, 22, 12, 6. The corresponding observed numbers were 89, 68, 47, 30, i6, 6, the last being for 9 months. An even better result would have been obtained if the parameters of the predicted curve had been adjusted so as to give a somewhat more rapid decrease after maximum. When the residuals of monthly numbers, P-Q, are examined, they are found to have a pronounced oscillatory character. I.Phys. Rev. 55, 1102, 1939; Publ. A. S. P. 52, 379, 1940. Princeton University Observatory, Princeton, N. J. Publication: The Astronomical Journal Pub Date: 1945 DOI: 10.1086/105879 Bibcode: 1945AJ.....51R.124S full text sources ADS |" @default.
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- W2021121573 title "Successful result of a prediction of sunspots." @default.
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