Chromospheric magnetic fields. Observations, simulations and their interpretation

Abstract

The magnetic field of the quiet-Sun chromosphere remains a mystery for solar physicists. The reduced number of chromospheric lines are intrinsically hard to model and only a few of them are magnetically sensitive. In this work, we use a 3D numerical simulation of the outer layers of the solar atmosphere, to asses the reliability of non-LTE inversions, in this case applied to the Ca II 8542 Ã line. We show that NLTE inversions provide realistic estimates of physical quantities from synthetic observations.

10 pages, 7 figures, to appear in "2nd ATST - EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona", Conference Series of the Astronomical Society of the Pacific, 2012