Propagating kink waves in an open coronal magnetic flux tube with gravitational stratification: Magnetohydrodynamic simulation and forward modellingYuhang Gao, Tom Van Doorsselaere, Hui Tian, Mingzhe Guo and Konstantinos KarampelasA&A, 689 (2024) A195DOI: https://doi.org/10.1051/0004-6361/202450769