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Letter to the Editor
Does the photospheric current take part in the flaring process?
V.I. Abramenko 1,
V.B. Yurchishin 1 and
V. Carbone 2, 3
Received 2 October 1997 / Accepted 17 March 1998
On the basis of vector magnetograms of two flaring active regions (ARs) we analyze the scaling behavior of the current helicity in the photosphere. The signed measure so obtained possesses a well pronounced sign-singularity in the range of scales from more than 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.
Key words: solar flares scaling laws turbulence
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© European Southern Observatory (ESO) 1998
Online publication: May 15, 1998