The Position of High Frequency Waves with Respect to the Granulation Pattern

TL;DR

This study analyzes high frequency velocity oscillations in the solar photosphere, revealing their distribution across different regions and flow directions, using advanced 2D spectroscopy techniques.

Contribution

It provides new observational insights into the spatial distribution and flow association of high frequency waves in the solar photosphere.

Findings

Waves are evenly distributed over up-flows and down-flows.

Waves in the lower line tend to appear over down-flows.

No preference in wave occurrence based on activity levels.

Abstract

High frequency velocity oscillations were observed in the spectral lines Fe I 543.45nm and 543.29nm, using 2D spectroscopy with a Fabry- Perot and speckle reconstruction, at the VTT in Tenerife. We investigate the radial component of waves with frequencies in the range 8 - 22mHz in the internetwork, network and a pore. We find that the occurrence of waves do not show any preference on location and are equally distributed over down-flows and up-flows, regardless of the activity of the observed area in the line of Fe I 543.45nm. The waves observed in the lower formed line of Fe I 543.29nm seem to appear preferentially over down-flows.