Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-05-18T00:57:12.319Z Has data issue: false hasContentIssue false

On the Inference of Magnetic Field Vectors from Stokes Profiles: A Generalization of the Weak-Field Approximation

Published online by Cambridge University Press:  12 April 2016

Zhong-Quan Qu
Yunnan Observatory, Kunming 650011, China
You-Ji Ding
Yunnan Observatory, Kunming 650011, China
Jia-Yu Xuan
Yunnan Observatory, Kunming 650011, China
Shi-Hui Ye
Yunnan Observatory, Kunming 650011, China


Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A generalization of Jefferies et al’s weak-field approximation for the inference of the strength and polar angle of magnetic field vectors from Stokes profiles is obtained while the inference of azimuthal angle follows a relationship derived by Landi Degl’Innocenti’s perturbative solutions to the transfer equations in which the magneto-optical effect is taken account. It is found that the weak-field condition (ΔλH / ΔλD ≤1) is not necessary for the new method when the fitting is done in the line wings.

Session 2. Theory of Active Region Structure
Copyright © Astronomical Society of the Pacific 1993


Humlicek, J.: 1982, J.Quant.Spectra.Radiat.Transfer 27,437 Google Scholar
Jefferies, J.T. and Mickey, D.L.: 1991, Ap.J. 372, 694 Google Scholar
Jefferies, J.T.,Lites, B.W. and Skumanich, A.:1989,Ap.J. 343, 920 Google Scholar
Landi Degl’Innocenti, E. and Landi Degl’Innocenti, M.:1973,sol.Phys.31, 299 Google Scholar
Lites, B. W., Skumanich, A.,Rees, D. E. and Murphy, G. A.: 1988,sol.phys.330, 493 Google Scholar
Rees, D. E.:1987,in Kalkofen, W.(ed.),‘ Numerical Radiative Transfer’, Cambridge Univ. Press, p213 Google Scholar