Chromospheric diagnosis with forward scattering polarization

TL;DR

This paper explores the feasibility of using forward scattering polarization at the solar disk center for chromospheric diagnosis, employing synthesized polarization maps from MHD models and NLTE calculations to identify Hanle polarity inversion lines.

Contribution

It introduces a method to diagnose the chromosphere by analyzing forward scattering polarization and Hanle effect features in polarization maps, aiding the separation of magnetic and dynamic influences.

Findings

Identification of Hanle polarity inversion lines supports chromospheric diagnosis.

Forward scattering polarization maps can reveal magnetic and dynamic effects.

The approach enhances understanding of chromospheric magnetic fields.

Abstract

Is it physically feasible to perform chromospheric diagnosis using spatial maps of scattering polarization at the solar disk center? To investigate it we synthesized polarization maps (in 8542 Angstroms) resulting from MHD solar models and NLTE radiative transfer calculations that consider Hanle effect and vertical macroscopic motions. After explaining the physical con- text of forward scattering and presenting our results, we arrive at the definition of Hanle polarity inversion lines. We show how such features can give support for a clearer chromospheric diagnosis in which the magnetic and dynamic effects in the scattering polarization could be disentangled.