Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newa....8..655l&link_type=abstract
New Astronomy, Volume 8, Issue 7, p. 655-664.
Astronomy and Astrophysics
Astronomy
6
Sun: Prominences, Sun: Activity, Sun: General
Scientific paper
The paper presents the results of a study of the asymmetry of the solar active prominences (SAP) at low (<=40°) and high (>=50°) latitudes, respectively, from 1957 through 1998 (solar cycles 19-22). A quantitative analysis of the hemispheric distribution of the SAP is given. We found that the annual hemispheric asymmetry indeed exists at low latitudes, but strangely, a similar asymmetry does not seem to occur for SAPs at high latitudes. We found that the north-south (N-S) asymmetry of the solar active prominences at high latitudes is always north dominated during solar cycles 19-22 while the N-S asymmetry of the SAPs at low latitudes is shifted to a dominance in the southern hemisphere for solar cycle 21 and remains south dominated even in cycle 22. Thus, the hemispheric asymmetry of the solar active prominences at high latitudes in a cycle appears to have little connection with the asymmetry of the solar activity at low latitudes.
Li Kai-Jun
Liang Hong-Fei
Liu Xiao-Hai
Zhan La-Sheng
Zhao Hai-Juan
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