Speaker
Description
First Name: Xiaohong
Last Name: Li
Affiliation: Max Planck Institute for Solar System Research
All Authors: Xiaohong Li, Sami K. Solanki, Thomas Wiegelmann, Gherardo Valori, Daniele Calchetti, Johann Hirzberger, Clara Froment, Henrik Eklund, Joachim Woch, Achim Gandorfer, the Solar Orbiter team
Abstract: We present Solar Orbiter/PHI-HRT observations of a young active region and a later neighboring flux emergence that qualitatively altered the magnetic connectivity of the system. Using combined PHI-HRT and SHARP vector magnetograms, we use potential field and non-linear force-free field extrapolations to track the restructuring of coronal loops during the emergence. We report qualitative trends in the relocation of connectivity domains, the organization of quasi-separatrix layers, and the evolution of shear and flux accumulation/cancellation near the interface between the regions. We also compare coronal energy estimates from NLFFF with the corresponding potential state to assess the build-up and partial release of free magnetic energy over time. The analysis is ongoing; here we focus on methodology, event context, and preliminary patterns linking neighboring emergence to large-scale “rewiring” of the coronal field. These results underline the diagnostic value of high-cadence PHI-HRT vector data, coupled with field extrapolations, for monitoring connectivity changes and eruption readiness in multi-AR environments.