Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.0513z&link_type=abstract
American Astronomical Society, SPD meeting #37, #5.13; Bulletin of the American Astronomical Society, Vol. 38, p.225
Astronomy and Astrophysics
Astronomy
Scientific paper
The statistical properties of sunspot, active regions (plages) and filament distributions obtained from the automated Solar Feature Catalogues (SFC, http://solar.inf.brad.ac.uk) and their relation to flare distributions are presented for 1996-2005. We present distributions of sunspot numbers with given areas for different phases and the whole solar cycle 23. Statistical sunspot and plage area distributions revealed a strong North-South asymmetry of about 0.2-0.6 for sunspots, plages and flare occurrences with two basic periods of about 9 and 2.5 years. The distributions of sunspot and flare occurrences at different latitudes and longitudes in Northern and Southern hemispheres and their magnetic tilts are compared with their total and excess magnetic fields during the whole period of observations. The application of these results to the solar dynamo models is discussed.
Zharkov S.
Zharkova Valentina
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