Asymmetries during the maximum phase of solar cycle 22

Abstract

This paper presents the result of studies of the asymmetries (N-S and E-W) for different manifestations of solar activity events (sunspot groups, Hα flares and active prominence/filaments) during the maximum-phase (1989-1991) of solar cycle 22. During the period considered, the results obtained show the existence of a real N-S asymmetry, whereas the E-W asymmetry may exist only for Hα flares. There is no definite relationship between the asymmetries and the occurrence of events; however, around low activity sometimes we find enhanced asymmetry, and low asymmetry around high activity. Our study suggests a good agreements with similar studies made by others.