The new capabilities of fast bidimensional spectropolarimetric scanning, allowed by recent instrumental development, provide a new insight into the study of chromospheric active regions. We present results from the analysis of datasets acquired with Interferometric BIdimensional Spectrometer operating at the Dunn Solar Telescope in spectrometric and spectropolarimetric mode. The high spatial and temporal resolution allows us to study oscillations and MHD wave propagation between photosphere and chromosphere. In particular we focused on the coupling between photospheric magnetic field and wave transmission. Among other findings, we observe a shift of the cross-correlation spectrum, above those photospheric regions where the magnetic field vector is strongly inclined with respect to the line of sight. Such a result could offer a new perspective for the understanding of plasma wave reprocessing.
Memorie della Societa Astronomica Italiana
- Pub Date:
- Sun: magnetic fields;
- Sun: oscillations