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New generation Stokes inversion codes

Published online by Cambridge University Press:  24 July 2015

A. Asensio Ramos  and
J. de la Cruz Rodríguez
A. Asensio Ramos
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
J. de la Cruz Rodríguez
Affiliation:
Institute for Solar Physics, Dept. of Astronomy, Stockholm University, Albanova University Center, 10691 Stockholm, Sweden
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Abstract

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We utilize the concept of sparsity or compressibility to develop an new generation of inversion codes for the Stokes parameters. The inversion code uses numerical optimization techniques based on the idea of proximal algorithms to impose sparsity. In so doing, we allow to exploit the presence of spatial correlation on the maps of physical parameters. Sparsity also regularizes the solution by reducing the number of unknowns. The solution has an increased robustness.

Keywords

Sun: magnetic fieldsatmosphereline: profilesmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S305: Polarimetry: From the Sun to Stars and Stellar Environments , December 2014 , pp. 225 - 233
Copyright
Copyright © International Astronomical Union 2015 

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