Abstract
Long-term cyclic variations in the distribution of prominences and intensities of green (530.3 nm) and red (637.4 nm) coronal emission lines over solar cycles 18–23 are presented. Polar prominence branches will reach the poles at different epochs in cycle 23: the north branch at the beginning in 2002 and the south branch a year later (2003), respectively. The local maxima of intensities in the green line show both poleward- and equatorward-migrating branches. The poleward branches will reach the poles around cycle maxima like prominences, while the equatorward branches show a duration of 18 years and will end in cycle minima (2007). The red corona shows mostly equatorward branches. The possibility that these branches begin to develop at high latitudes in the preceding cycles cannot be excluded.
Similar content being viewed by others
References
Altrock, R. C. 1997,Solar Physics,170, 411.
Coffey, H. C., Hanchett, C. D. 1998, InSynoptic Solar Physics, ASP Conference Series, Vol. 140, (eds.) K. S. Balasubramaniam, J. W. Harvey and D. M. Rabin, 447.
Minarovjech, M., Rybanský, M., Rušin, V. 1998, InNew Perspectives on Solar Prominences, ASP Conference Series, (San Francisco), (eds.) D. Webb, D. Rust and B. Schmieder, 484.
Pap, J. M., Frohlich, C, Hudson, H. S., Solanki, S. K. 1994,The Sun as α Variable Star (Cambridge University Press).
Rušin, V., Zverko, M. 1990Solar Phys. 128, 261.
Rušin, V., Rybanský, M., Minarovjech, M. 1998, InSynoptic Solar Physics, ASP Conference Series 140, (eds.) K. S. Balasubramaniam, J. W. Harvey and D. M. Rabin, 353.
Sýkora, J. 1992,Contr. Astron. Obs. Skalnaté Pleso 22, 55.
Waldmeier, M. 1957,Die Sonnenkorona, Vol II., Birkhauser, Basel.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rušin, V., Minarovjech, M. & Rybanský, M. Long-term cyclic variations of prominences, green and red coronae over solar cycles. J Astrophys Astron 21, 201–204 (2000). https://doi.org/10.1007/BF02702391
Issue Date:
DOI: https://doi.org/10.1007/BF02702391