Observational support of reconnection in solar flares |
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Authors: | P Démoulin J C Hénoux B Schmieder C H Mandrini M G Rovira B Somov |
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Institution: | (1) Observatoire de Paris, DASOP, URA326 (CNRS), 92195 Meudon Cédex, France;(2) Instituto de Astronomía y Física del Espacio, IAFE-CONICET, CC.67, Suc.28, 1428 Buenos Aires, Argentica;(3) Solar Physics Department, Astronomical Institute, Moscow State University, Universitetskii Prospekt 13, B-234 Moscow, 119899, Russia |
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Abstract: | We present a detailed analysis of the magnetic topology of flaring active region. TheH
kernels are found to be located at the intersection of the separatrices with the chromosphere when the shear, deduced from the fibrils or/and transverse magnetic field direction, is taken into account. We show that the kernels are magnetically connected by field lines passing close to the separator. We confirm, for other flares, previous studies which show that photospheric current concentrations are located at the borders of flare ribbons. Moreover we found two photospheric current concentrations of opposite sign, linked in the corona by field lines which follow separatrices. These give evidence that magnetic energy is released by reconnection processes in solar flares. |
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Keywords: | Flares Reconnection Magnetic Fields |
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