Speaker
Description
First Name: Edvarda
Last Name: Harnes
Affiliation: Max Planck Institute for Solar System Research
All Authors: E. Harnes, H. N. Smitha, D. Przybylski, A. Korpi-Lagg, R. Cameron, S. K. Solanki, T. Riethmüller, A. Feller, F. Iglesias, and the Sunrise III team
Abstract: The near-ultraviolet part of the solar spectrum contains several broad and strong Fe I lines with cores forming in the lower chromosphere between the formation heights of Ca II 854.2 nm line and the Mg I b2 line. With the successful flight of the SUNRISE III solar observatory, we have for the first time spectropolarimetric observations of these lines at high spatial and spectral resolution. In this work, we synthesize the Fe I lines at 358.12 nm and 407.17 nm in 3D magnetohydrodynamic simulations made with MURaM, using the radiative transfer code RH1.5D. We test the effect of spatial and spectral resolution and compare the results with SUNRISE III/SUSI observations. We explore the diagnostic potential of the lines, and show that we can measure magnetic field strengths at two distinct heights using a single line.