Speaker
Description
First Name: Nawin
Last Name: Ngampoopun
Affiliation: Max Planck Institute for Solar System Research
All Authors: N. Ngampoopun, H. Peter, L. P. Chitta, A. Dolliou, A. Zhukov, L. Dolla, S. Shestov, B. Bourgoignie, S. Fineschi, S. Gunar, P. Lamy, M. Mierla, P. Rudawy, K. Tsinganos
Abstract: Coronal plumes are long-lived structures inside coronal holes that extend to the heliosphere and can be observed in the visible light and in the extreme ultraviolet (EUV). However, linking the coherent dynamics in these two passbands is nontrivial. In this work, we present a co-observation of a coronal plume in the southern polar coronal hole using Proba-3/ASPIICS visible light coronagraph and several EUV imagers, including SDO/AIA and GOES/SUVI. ASPIICS can observed the off-limb corona starting from the height of 1.1 solar radii, allowing us to seamlessly connect features in the low and middle corona. We observed a sudden widening of the coronal plume in ASPIICS visible-light wideband channel. This widening is accompanied by a propagating density enhancement which has an apparent speed similar to those of coronal jets, and is thought to be related to a failed filament eruption near the plume footpoint. As the filament material itself does not reach up to ASPIICS field-of-view, we suggest that the propagating density is from the interchange reconnection between the expanding closed loop above the filament and the open magnetic field in polar plume. This work also highlights the capability of the ASPIICS coronagraph to reveal dynamics in a region that has not been explored in detail so far.