Active-Region Twist Derived from Magnetic Tongues and Linear Force-Free Extrapolations

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The main aim of this study is to compare the amount of twist present in emerging active regions (ARs) from photospheric and coronal data. We use linear force-free field models of the observed coronal structure of ARs to determine the global twist. The coronal twist is derived, on one hand, from the...

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Detalles Bibliográficos
Autores principales:	Poisson, M., López Fuentes, M., Mandrini, C.H., Démoulin, P.
Formato:	JOUR
Materias:	Active regions: magnetic fields Active regions: structure Corona: models Helicity: magnetic
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00380938_v290_n11_p3279_Poisson
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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