Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.170...85b&link_type=abstract
(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640
Astronomy and Astrophysics
Astrophysics
Faculae, Solar Activity, Solar Magnetic Field, Solar Terrestrial Interactions, Geomagnetism, Solar Corona, Spatial Distribution
Scientific paper
The latitudinal distributions of polar faculae, green coronal emission maxima, prominenes, an of a new index of enhanced geomagnetic recurrence are compared with the distribution of magnetic fields during the cycles Nos. 20 and 21. No distinct high-latitude initial stage of an extended cycle is found in the corona, prominences, and polar faculae distribution. On the contrary, it seems that the polar faculae and their following polarity magnetic fields represent the last evolutionary phase of a magnetic activity cycle lasting 15-17 years. The enhanced recurrent geomagnetic activity seems to be related to the old cycle fields.
Bumba Vaclav
Hejna Ladislav
Rusin Vojtech
Rybansky Milan
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