Abstract Details
| Name: Upasna Baweja Affiliation: Aryabhatta Research Institute of Observational Sciences Conference ID: ASI2025_622 Title : Investigation of Co-existence of longitudinal and transverse waves in polar plumes Authors and Co-Authors : Upasna Baweja, Vaibhav Pant, Krishna S Prasad, Arpit K Shrivastav Abstract Type : Oral Abstract Category : Sun, Solar System, Exoplanets, and Astrobiology Abstract : Magnetohydrodynamic waves play a crucial role in heating the solar corona and generating the solar wind. Recent observations have demonstrated evidence of longitudinal intensity perturbations (using Atmospheric Imaging Assembly (AIA) onboard Solar Dynamic Observatory (SDO)) and transverse wave propagation (using Coronal Multichannel Polarimeter (CoMP)) in polar plumes. Despite these findings, there exists a gap in our understanding due to the lack of simultaneous detection of both wave types within the polar regions using high-resolution imaging techniques. In this study, we aim to investigate the co-existence and excitation mechanisms of the longitudinal and transverse oscillations in the polar regions. We utilise the high spatial and temporal resolution images of Extreme Ultraviolet Imager (EUI) aboard Solar Orbiter. We analysed the north polar data corresponding to Sep 14, 2021, obtained using EUI (17.4 nm) when the spacecraft was at 0.59 astronomical units (AU) from the Sun. Our preliminary results have revealed the signatures of longitudinal oscillations in the polar regions, and we are exploring the transverse oscillation signatures. We are also investigating the consequences of their simultaneous existence in the polar plumes. In this presentation, we will share our initial findings. |