Observational support of reconnection in solar flares

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We present a detailed analysis of the magnetic topology of flaring active region. The Hα 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 t...

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Autores principales: Démoulin, P., Hénoux, J.C., Schmieder, B., Mandrini, C.H., Rovira, M.G., Somov, B.
Formato: JOUR
Materias:
Flares
Magnetic Fields
Reconnection
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00386308_v68_n1-4_p129_Demoulin
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00386308_v68_n1-4_p129_Demoulin
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spelling todo:paper_00386308_v68_n1-4_p129_Demoulin2023-10-03T14:49:12Z Observational support of reconnection in solar flares Démoulin, P. Hénoux, J.C. Schmieder, B. Mandrini, C.H. Rovira, M.G. Somov, B. Flares Magnetic Fields Reconnection We present a detailed analysis of the magnetic topology of flaring active region. The Hα 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. © 1994 Kluwer Academic Publishers. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00386308_v68_n1-4_p129_Demoulin
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Flares
Magnetic Fields
Reconnection
spellingShingle Flares
Magnetic Fields
Reconnection
Démoulin, P.
Hénoux, J.C.
Schmieder, B.
Mandrini, C.H.
Rovira, M.G.
Somov, B.
Observational support of reconnection in solar flares
topic_facet Flares
Magnetic Fields
Reconnection
description We present a detailed analysis of the magnetic topology of flaring active region. The Hα 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. © 1994 Kluwer Academic Publishers.
format JOUR
author Démoulin, P.
Hénoux, J.C.
Schmieder, B.
Mandrini, C.H.
Rovira, M.G.
Somov, B.
author_facet Démoulin, P.
Hénoux, J.C.
Schmieder, B.
Mandrini, C.H.
Rovira, M.G.
Somov, B.
author_sort Démoulin, P.
title Observational support of reconnection in solar flares
title_short Observational support of reconnection in solar flares
title_full Observational support of reconnection in solar flares
title_fullStr Observational support of reconnection in solar flares
title_full_unstemmed Observational support of reconnection in solar flares
title_sort observational support of reconnection in solar flares
url http://hdl.handle.net/20.500.12110/paper_00386308_v68_n1-4_p129_Demoulin
work_keys_str_mv AT demoulinp observationalsupportofreconnectioninsolarflares
AT henouxjc observationalsupportofreconnectioninsolarflares
AT schmiederb observationalsupportofreconnectioninsolarflares
AT mandrinich observationalsupportofreconnectioninsolarflares
AT roviramg observationalsupportofreconnectioninsolarflares
AT somovb observationalsupportofreconnectioninsolarflares
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