Daily observations of the 10.7-cm. solar radiation show a 27-day recurrent peak which has a strong correlation with the appearance of sunspots. In the absence of large spots the equivalent temperature of the sun is 7.9 × 10 4 °K.s of solar noise show a sharp rise lasting one or two minutes and a gradual decline to pre-storm value or to a somewhat higher value. Average burst duration is ten minutes.
No takes yet. Share an insight, caveat, or question.
A. E. Covington (1948) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: