摘要: Radius of the Sun has been measured by many researchers using various techniques over more than three centuries, which demonstrated that solar radius is not constant in time, but exhibits significant variations. As cases variations most other observed features Sun, correlation saught between and sunspot numbers, latter being recognized as best index activity. However, such studies have so far produced completely contradictory results, viz., both anticorrelation reported. The reason appears to be data used, highly inhomogeneous. I report here a statistically relationship numbers sense larger diameter associated with higher levels activity, when homogenised base covering observations last centuries used for radius.
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