| Name: Mansi . |
| Affiliation: Aryabhatta Research Institute of Observational Sciences(ARIES) |
| Conference ID: ASI2026_701 |
| Title: Multi - wavelength studies of large amplitude prominence oscillations |
| Abstract Type: Poster |
| Abstract Category: Sun, Solar System, Exoplanets, and Astrobiology |
| Author(s) and Co-Author(s) with Affiliation: Mansi(ARIES, Nainital, 263001, India), S. Krishna Prasad(ARIES, Nainital, 263001, India) |
| Abstract: Prominences are cool, dense plasma structures that are supported in the solar corona by magnetic fields in opposition to gravitational force. These prominences can become unstable when triggered by external drivers like CMEs, flares, or jets and sometimes display oscillations. According to the velocity amplitude of these oscillations, they can be small amplitude (<10 km/s) or large amplitude(>10 km/s); and depending on the plasma motions with respect to the prominence axis, they can be transverse or longitudinal. In this study, we investigated large-amplitude oscillations in a quiescent prominence that were triggered by EUV waves generated after a hot-channel eruption. The analysis was carried out using observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO).
Time-distance (XT) maps were constructed along selected slits across the prominence, and Gaussian fitting was applied to the intensity profiles at each time step to determine the prominence center positions. These positions were then modeled with a damped sine function including a linear trend, from which we derived key oscillation parameters such as the initial amplitude, period, damping time, quality factor, and velocity amplitude. In addition to the single-channel analysis, we also performed a multiwavelength study of the same prominence oscillations using different AIA channels. Furthermore, we examined the spatial profile of the oscillations along the prominence to investigate how the oscillatory characteristics varied with height. |
