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Variability of the solar chromospheric network over the solar cycle

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Abstract

From a large sample of the Kodaikanal spectroheliograms in the Call K line we have studied the variations in the intensity of the network elements over two solar cycles and have estimated their contribution to the overall variability seen in the disc-averaged K line profiles. The relative contribution of the network elements and the bright points to the K-emission are of the order of 25% and 15% respectively. We have shown that the area of the network elements is anti-correlated with the solar activity, and it increases by about 24% during the solar minimum compared to the maximum period.

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Authors and Affiliations

  1. Indian Institute of Astrophysics, 560 034, Bangalore, India

    R. Kariyappa & K. R. Sivaraman

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  1. R. Kariyappa
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  2. K. R. Sivaraman
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Kariyappa, R., Sivaraman, K.R. Variability of the solar chromospheric network over the solar cycle. Sol Phys 152, 139–144 (1994). https://doi.org/10.1007/BF01473196

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  • DOI: https://doi.org/10.1007/BF01473196

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