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Strategy for the Inversion of Hinode Spectropolarimetric Measurements in the Quiet +n

2007; Oxford University Press; Volume: 59; Issue: sp3 Linguagem: Inglês

10.1093/pasj/59.sp3.s837

2053-051X

D. Orozco Suárez, Bellot Rubio, Toro Jose Carlos del Iniesta, S. Tsuneta, B. W. Lites, Kiyoshi Ichimoto, Yukio Katsukawa, S. Nagata, Toshifumi Shimizu, Richard A. Shine, Y. Suematsu, T. D. Tarbell, A. M. Title,

Solar Radiation and Photovoltaics

In this paper we propose an inversion strategy for the analysis of spectropolarimetric measurements taken by {\em Hinode} in the quiet Sun. The spectropolarimeter of the Solar Optical Telescope aboard {\em Hinode} records the Stokes spectra of the \ion{Fe}{i} line pair at 630.2 nm with unprecendented angular resolution, high spectral resolution, and high sensitivity. We discuss the need to consider a {\em local} stray-light contamination to account for the effects of telescope diffraction. The strategy is applied to observations of a wide quiet Sun area at disk center. Using these data we examine the influence of noise and initial guess models in the inversion results. Our analysis yields the distributions of magnetic field strengths and stray-light factors. They show that quiet Sun internetwork regions consist mainly of hG fields with stray-light contaminations of about 0.8.