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A comparison between the two tracers of magnetic field mirror asymmetry insolar active regions, twist and current helicity, is presented. It is shownthat for individual active regions these tracers do not possess visiblesimilarity while averaging by time over the solar cycle, or by latitude,reveals similarities in their behaviour. The main property of the dataset isanti-symmetry over the solar equator. Considering the evolution of helicalproperties over the solar cycle we find signatures of a possible sign change atthe beginning of the cycle, though more systematic observational data arerequired for a definite confirmation. We discuss the role of both tracers inthe context of the solar dynamo theory.

Current Helicity and Twist as Two Indicators of The Mirror Asymmetry of solar Magnetic Fields