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The solar activity maximum of cycle no. 22 from KAAU solar observatory

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Abstract

The eleven-year sunspot cycles are considered to represent one of the solar activities. The daily observations of the sunspots in the KAAU Solar Observatory (KAAUSO) have been utilised to reduce a period of the present solar cycle, using Fourier technique. The highest peak in the amplitude spectrum was for a frequency of 0.00029 day−1, for which the maximum occurred mid 1990.

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References

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Authors and Affiliations

  1. Astronomy Department, Faculty of Science K.A.A.U., Jeddah, Saudi Arabia

    H. M. Basurah, Y. M. Al-Mleaky & A. A. Malawi

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  1. H. M. Basurah
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  2. Y. M. Al-Mleaky
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  3. A. A. Malawi
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Basurah, H.M., Al-Mleaky, Y.M. & Malawi, A.A. The solar activity maximum of cycle no. 22 from KAAU solar observatory. Astrophys Space Sci 215, 131–133 (1994). https://doi.org/10.1007/BF00627465

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  • DOI: https://doi.org/10.1007/BF00627465

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