On a relation between the indices of solar activity in the photosphere and the corona

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1969 English Publisher:Springer Science and Business Media LLCJournal:Solar Physics, volume 10, pages 168-177 (issn: 0038-0938, eissn: 1573-093X,

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Authors: John Xanthakis;

doi: 10.1007/bf00146165

On a relation between the indices of solar activity in the photosphere and the corona

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Abstract

In the first part a new index of solar activity in the photosphere is introduced i.e. the areas index Ia defined with the help of the relation, where A and f are the total areas of the sunspots and faculae respectively corrected for foreshortening.

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Academy of Athens
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