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Coupling photosphere and chromosphere through plasma waves

This paper is available in a repository.
This paper is available in a repository.

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Preprint: policy unknown
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Postprint: policy unknown
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Abstract

The new capabilities of fast bidimensional spectropolarimetric scanning, al-lowed by recent instrumental development, provide a new insight into the study of chro-mospheric active regions. We present results from the analysis of datasets acquired with Interferometric BIdimensional Spectrometer operating at the Dunn Solar Telescope in spec-trometric 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.