Speaker
Description
First Name: Patrick
Last Name: Ondratschek
Affiliation: Max Planck Institute for Solar System Research
All Authors: P. Ondratschek, D. Przybylski, H.N. Smitha, R. Cameron, S. K. Solanki
Abstract: The Mg II h&k lines are well-suited to study the solar chromosphere. Forming under non-local thermodynamic equilibrium conditions, the line formation of these lines is complicated and not fully understood. Theoretical models of the solar chromosphere, in combination with radiative transfer computations, are a necessary step for interpreting high-resolution observations from the Interface Region Imaging Spectrograph (IRIS) mission. In this work, we study synthetic Mg II h&k line profiles that are synthesized from a series of simulations. The simulations aim to represent the solar chromosphere at regions of varying magnetic flux. The simulations are computed with the recently developed chromospheric extension of the MURaM code (MURaM-ChE). The set of simulations ranges from a very quiet part of the Sun to a strong plage region. We aim to compare spectral line properties such as peak separation, peak intensity, and peak asymmetry ratio between the different models and observations. In addition, we discuss the effect of 3D radiative transfer in the different models.