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Spectropolarimetric analysis of 3D MHD sunspot simulations

Solanki, S. K.; Borrero, J. M.; Rempel, M.

We have employed 3D non-grey MHD simulations of sunspots to compute theoretical Stokes profiles and compare the levels of circular and linear polarization in the simulations with those observed in a real sunspot. We find that the spatial distribution and average values of these quantities agree very well with the observations, although the polariz…

Center to limb variation of penumbral Stokes V profiles

Franz, M.; Schlichenmaier, R.

We investigated the horizontal and the vertical component of the Evershed flow (EF). To this end, we computed average Stokes V profiles for various velocity classes in penumbrae at different heliocentric angles. Our results show that for blueshifted profiles an additional lobe with the same polarity as the spot is present in the blue side of the a…

Review of Hinode results

Suematsu, Y.

Hinode is an observatory-style satellite, carrying three advanced instruments being designed and built to work together to explore the physical coupling between the photosphere and the upper layers for understanding the mechanism of dynamics and heating. The three instruments aboard are the Solar Optical Telescope (SOT), which can provide high-pre…

Probability distribution functions for the Sun's magnetic field

Stenflo, J. O.

Magnetoconvection structures the Sun's magnetic field cover a vast range of scales, down to the magnetic diffusion scale that is orders of magnitude smaller than the resolution of current telescopes. The statistical properties of this structuring are governed by probability density functions (PDFs) for the flux densities and by the angular distrib…