Physics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..137..395b&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 137, Feb. 1992, p. 395-400.
Physics
12
Electric Corona, Light Emission, Solar Corona, Solar Cycles, Faculae, Photosphere, Solar Magnetic Field, Sunspots
Scientific paper
Consideration is given to the latitude-time distribution of the green (5303 A) coronal line emission for 1940-1989 from observations by Waldmeier (1957), Kislovodsk, Lomnicky Stit, Norikura, and Pic-du-Midi - Q.B.S.A. (1955-1987). These data have been with the distributions of the weak magnetic field (Stenflo, 1988), of polar faculae and sunspots, and have given an interpretation of the results. It is found that a new cycle of coronal activity commences after the polar field reversal in the form of two components in each hemisphere. The first component with the polar faculae that appear at latitude 40 deg and migrate poleward is identified. The second component representing sunspots shows up at 40 deg latitude 5-6 years after and drifts equatorward. Thus the global coronal activity cycle has a duration of 16-17 years and is described by two components that reflect the activity of polar faculae and sunspots.
Bortsov V. V.
Makarov Valentin I.
Mikhailutsa Valery P.
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