On the basis of vector magnetograms of two flaring active regions (ARs) we analyze the scaling behavior of the current helicity Hc in the photosphere. The signed measure so obtained possesses a well pronounced sign–singularity in the range of scales from more than 104 Km down to the resolution limit of observations. We found that during the flaring process there is a signature both of a reorganization of the current helicity in the photosphere and of a strong magnetic energy dissipation of the photospheric magnetic field.
Does the photospheric current take part in the flaring process?
CARBONE, Vincenzo
1998-01-01
Abstract
On the basis of vector magnetograms of two flaring active regions (ARs) we analyze the scaling behavior of the current helicity Hc in the photosphere. The signed measure so obtained possesses a well pronounced sign–singularity in the range of scales from more than 104 Km down to the resolution limit of observations. We found that during the flaring process there is a signature both of a reorganization of the current helicity in the photosphere and of a strong magnetic energy dissipation of the photospheric magnetic field.File in questo prodotto:
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