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Sixty six day periodicity of polar coronal holes |
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| Authors: | T. K. Das T. N. Chatterji T. Roy A. K. Sen |
| Affiliation: | (1) Institute of Radio Physics and Electronics, Calcutta, India |
| Abstract: | Fourier analysis of the coronal hole size distribution shows sixty six day periodicity in respect of the time of advancement of solar cycle which is presumed to be due to the differential rotation of solar envelope. |
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