Abstract Details


Name: Mansi
Affiliation: Aryabhatta Research Institute of Observational Sciences
Conference ID: TVS202510154
Title: Large Amplitude Oscillations in a Quiescent Prominence perturbed due to external disturbance.
Authors and Co-Authors: Dr. S. Krishna Prasad
Abstract Type: Contributory Presentation
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); 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. This study improves our understanding of prominence stability and the impact of large-amplitude oscillations on solar eruptions.