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Title:
On the north-south asymmetry of solar activity cycles
Authors:
Verma, V. K.
Affiliation:
AA(Uttar Pradesh State Observatory, Nainital, India)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 2, p. 797-800. (ApJ Homepage)
Publication Date:
02/1993
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Solar Activity, Solar Cycles, Magnetic Field Configurations, Solar Magnetic Field, Symmetry
DOI:
10.1086/172250
Bibliographic Code:
1993ApJ...403..797V

Abstract

We report a study of various solar phenomena occurring in both northern and southern hemispheres of the Sun for solar cycles 8-22. We have calculated the N-S asymmetry indices for several solar phenomena and plotted them against the number of solar cycles. The study indicates that the N-S asymmetry has a trend of a long-term characteristic time scale of about 110 yr. An explanation of this N-S asymmetry period is not available; it may be due to the asymmetric internal magnetic structure of the Sun.

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