North-south asymmetries in the green corona brightness between 1947 and 1976 |
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| Authors: | Özgüç Atila Üçer Cumhure |
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| Institution: | (1) Kandilli Observatory, Bogaziç University, Çengelköy, Istanbul, Turkey |
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| Abstract: | The north-south asymmetry has been studied using the green emission corona brightness in the period of 1947–1976. (N - S)/(N + S) values are constructed with the 5-deg opposite coronal belts brightnesses between ± 5 and ± 60 deg. Power spectra analyses were performed to study periodicities of these (N - S)/(N + S) values. Two noticeable periodicities (14.5 and 5 yr) have been found. |
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