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A&A 463, 727736 (2007) DOI: 10.1051/0004-6361:20065673
 

Summary: A&A 463, 727­736 (2007)
DOI: 10.1051/0004-6361:20065673
c ESO 2007
Astronomy
&
Astrophysics
Magnetic flux tubes observed with THEMIS/MSDP
P. Mein1, N. Mein1, M. Faurobert2, G. Aulanier1, and J.-M. Malherbe1
1
Observatoire de Paris, Section de Meudon, LESIA, 92195 Meudon Cedex, France
e-mail: Pierre.Mein@obspm.fr
2
Université de Nice, UMR 6525, Parc Valrose, 06108 Nice Cedex, France
Received 23 May 2006 / Accepted 12 October 2006
ABSTRACT
Aims. We use spectro-polarimetric THEMIS/MSDP data to investigate the 3D structure of solar magnetic-flux tubes across the upper
photosphere.
Methods. Profiles of the sodium D1 line 589.6 nm are analysed by the bisector method at different wavelengths from the core to
the wings, for several bright features. They are compared to synthetic profiles derived from 2D magnetic models of flux tubes and
from the MULTI code for NLTE line profiles. Three different magnetic models of flux tubes are investigated. Model (I) consists of a

  

Source: Aulanier, Guillaume - Observatoire de Paris

 

Collections: Physics