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Reconstruction of the Coronal Magnetic Field for Active Region NOAA 8151

Published online by Cambridge University Press:  13 May 2016

S. Régnier  and
T. Amari
S. Régnier
Affiliation:
Institut d'Astrophysique Spatiale, Unité Mixte CNRS-Université Paris XI, Bâtiment 121, F-91405 Orsay Cedex, France
T. Amari
Affiliation:
CNRS, Centre de Physique Thorique de l'Ecole Polytechnique, F-91128 Palaiseau Cedex, France

Abstract

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The active region NOAA 8151 observed between February 11–13, 1998 exhibits a filament eruption linked to the disappearance of a sigmoidal structure. Using vector magnetograms from IVM (Mees Observatory, Hawaii), we perform a non linear force-free reconstruction of the coronal magnetic field above this active region. This reconstruction allows to determine the distribution of electric currents, the magnetic energy and the relative magnetic helicity. The reconstructed magnetic field lines are compared to the soft X-rays (SXT, Yohkoh) observations.

Type
Session IV: Structure and Dynamics of the Transiton Region and Corona
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 441 - 443
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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