Abstract
Lomnický Štít data of 5303 Å coronal green-line index (CI) are analysed for the years 1965-1994. The yearly quiet-Sun component (Q ci ) of CI estimated through the linear regression analysis of CI with sunspot numbers (SS) and CI with Ca plage index (CA) are found to vary with the 11-year solar activity cycle. Comparison of (Q ci ) with the quiet-Sun component of 10.7 cm flux ((Q 10.7)) revealed that the (Q ci ) contributes principally to the entire CI, while (Q 10.7) assumes much smaller values compared to its yearly averages. The slowly varying component of 5303 Å emission associated with sunspots and plages seems to be nearly absent in CI. This aspect is also confirmed through the multiple-linear regression analysis of CI with sunspots and plages. The delayed response of green corona to both sunspots and plages also revealed similar results.
Paper presented at the SOLERS22 International Workshop, held at the National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, U.S.A., June 17–21, 1996.
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Ramesh, K.B. (1998). A Correlative Study of Green Coronal Intensity with other Solar Indices. In: Pap, J.M., Fröhlich, C., Ulrich, R.K. (eds) Solar Electromagnetic Radiation Study for Solar Cycle 22. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5000-2_27
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