Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006padeu..17...15m&link_type=abstract
In: Proceedings of the 4th Workshop of Young Researchers in Astronomy & Astrophysics; Budapest, Hungary, 11-13 January, 2006; Pu
Astronomy and Astrophysics
Astrophysics
Scientific paper
The east-west asymmetry of the number of sunspots has been analyzed on the basis of the Debrecen Photoheliographic Data (DPD), the single spots of Greenwich Photoheliographic Results (GPHR), and the Sunspot Feature Catalogue (SFC). The DPD and SFC do not show E-W asymmetry in the number distribution of the spots for the spots with area of greater than 20 millionth of the solar hemisphere (MSH). The GPHR shows large E-W asymmetry. Its rate is increasing from center to limb while the area of the affected spots is also increasing from 10 to 50 MSH. The East-West asymmetry of the number of spots can be detected for small spots (<20 MSH) in all the three catalogues but its rate depends on the studied catalogue.
Baranyi Tunde
Mezö György
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