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Empirical Photospheric Fluxtube Models from Inversion of Stokes V Data

Published online by Cambridge University Press:  08 February 2017

C. U. Keller
C. U. Keller*
Affiliation:
Institute of Astronomy ETH-Zentrum CH-8092 Zürich Switzerland

Abstract

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We present results of an inversion procedure that derives the turbulent velocity, the magnetic field strength, and the temperature stratification of the photospheric layers of solar magnetic fluxtubes from 10 FeI and FeII Stokes V line profiles around 5250 Å and from the continuum contrast. The free parameters of two-dimensional magnetohydrostatic fluxtube models are determined by minimizing the difference between observed and calculated Stokes V parameters in an iterative manner. Results of this inversion procedure applied to observations of a plage and a network region at disk center indicate a temperature deficit (at equal geometrical height) of the fluxtubes at the level of continuum formation and a temperature excess at the highest levels of line formation in general agreement with the latest theoretical fluxtube models.

Type
III. Small-Scale Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 138: Solar Photosphere: Structure, Convection and Magnetic Fields , 1990 , pp. 121 - 124
Copyright
Copyright © Kluwer 1990 

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