Waves and Instabilities in the Solar Atmosphere (WISA)

3D Wavelet Method for Analysis of Propagating Waves in Solar Prominence

Not scheduled

20m

Aula Gratton (INAF, Osservatorio Astronomico di Roma)

Poster Contribution

Speaker

Aneta Wisniewska (Astronomical Institute Slovak Academy of Sciences, Tatranská Lomnica, Slovakia)

Description

On 26 September 2022, a quiescent solar prominence was observed using Hα imaging spectroscopy with SDDI on SMART. Previous studies found 4- and 15-minute oscillations with limited spatial coverage. We extend this to the full prominence using 3D wavelet analysis, comparing with SDO/AIA, STEREO-A/EUVI, and Solar Orbiter/EUI data for a tomographic view.
We examine oscillatory power from 3 to 64 minutes across plasma at different temperatures and viewpoints to assess wave propagation.
We analyze SDO/AIA, STEREO-A/EUVI, Solar Orbiter/EUI, and ground-based SDDI/SMART Hα observations, combining Doppler velocities and EUV intensities at 304 Å and 174 Å.
We confirm persistent propagating waves with periods from 4 to 64 minutes, strongest in Hα and 304 Å in the prominence’s core. Weak 4-minute and rapid 30-second oscillations occur near the solar surface in Doppler data. Vertical motions, kink waves, and transient short-period oscillations point to complex internal dynamics and possible coupling with photospheric 5-minute oscillations.