Solar cycle dependence of polar coronal holes |
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| Authors: | T. K. Das T. N. Chatterjee A. K. Sen |
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| Affiliation: | (1) Institute of Radio Physics and Electronics, University of Calcutta, 700009 Calcutta, India |
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| Abstract: | A study has been made of the polar coronal holes in relation to solar cycle activity. Important results obtained are: (i) the peak of the frequency distribution of coronal hole size shifts towards lower values as the solar cycle advances towards maximum, this being true for both the north and south polar holes, (ii) coronal hole size decreases with the increase of sunspot number. |
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