Multi-Diagnostic Investigation of Solar Prominence Oscillations from the Chromosphere to the Corona

We present an analysis of internal oscillations observed in a solar prominence located at the eastern limb on 26 September 2022. The prominence axis is oriented nearly parallel to the line of sight (approximately perpendicular to the limb), providing a particularly favorable geometry for the simultaneous detection of intensity variations and Doppler-shift signatures. Wavelet analysis was performed on ground-based H-α observations from the Solar Dynamics Doppler Imager (SDDI), complemented by space-based data from the SDO/AIA 304 Å and STEREO-A 304 Å channels. These chromospheric diagnostics of cool prominence plasma were further supplemented by coronal observations from UCoMP. The primary aim of this study is to compare oscillation periods detected within the prominence body with those present in the surrounding coronal environment, allowing us to investigate the coupling between cool chromospheric material and the overlying hot coronal plasma. The prominence is embedded within a well-developed coronal cavity, indicative of strong magnetic structure and a significant decrease of ambient coronal density.