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Fig. 7


Photospheric mapping of the QSLs of NOAA 11589, from the computation of the squashing degree, Q, for all our LFFF extrapolations. (a), c), e), d), f)) ~ 1 hour before the flare, at 15:00 UT for α = [ 7,3.5,0,−3.5,−7 ] × 10-3 Mm-1. b) ~ 30 min after the flare, at 17:00 UT, for α = 7 × 10-3 Mm-1 (i.e., the value considered in this paper).

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