On connecting the dynamics of the chromosphere and transition region with Hinode SOT and EIS

TL;DR

This study investigates how the dynamics of the transition region are influenced by photospheric magnetic fields and chromospheric waves using coordinated Hinode observations, revealing subtle connections and wave signatures linked to magnetic flux emergence.

Contribution

It introduces a multi-technique approach combining observations, magnetic extrapolations, and simulations to analyze the coupling between chromosphere, transition region, and corona.

Findings

Magnetic flux emergence signatures detected in multiple layers.

Enhanced wave power above magnetic regions.

Connections between photospheric magnetic activity and TR dynamics.

Abstract

We use coordinated Hinode SOT/EIS observations that include high-resolution magnetograms, chromospheric and TR imaging and TR/coronal spectra in a first test to study how the dynamics of the TR are driven by the highly dynamic photospheric magnetic fields and the ubiquitous chromospheric waves. Initial analysis shows that these connections are quite subtle and require a combination of techniques including magnetic field extrapolations, frequency-filtered time-series and comparisons with synthetic chromospheric and TR images from advanced 3D numerical simulations. As a first result, we find signatures of magnetic flux emergence as well as 3 and 5 mHz wave power above regions of enhanced photospheric magnetic field in both chromospheric, transition region and coronal emission.