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Numerical modeling of the linear polarization in molecular lines of the solar flash spectrum

Published online by Cambridge University Press:  27 June 2012

M. Faurobert ,
C. Fang ,
T. Corbard ,
I. Milié  and
M. Faurobert
I. Milié
Affiliation:
Astronomical Observatory Belgrade, Volgina 7, 11060 Belgrade, Serbia
M. Faurobert
Affiliation:
Laboratoire Lagrange, UMR 7293, Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d’Azur, Campus Valrose, 06108 Nice, France
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Abstract

Molecular lines formed in the upper photosphere of the Sun show significant degree of linear scattering polarization, when one observes close to the solar limb. Those lines prove to be important tools for turbulent magnetic field diagnostic via the Hanle effect. In order to correctly model the line formation in regions close to the Solar limb, one has to take into account the sphericity of the atmosphere and to model depolarizing collisions and NLTE line formation in details. We present computations of scattering polarization in C2 lines in a 1D spherically symmetric medium described by FALC and FALX models, and compare those computations to observations of the Solar flash spectrum.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 55: 4th French-Chinese Meeting on Solar Physics - Understanding Solar Activity: Advances and Challenges , 2012 , pp. 65 - 69
Copyright
© EAS, EDP Sciences 2012

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