Modelling X-shaped radio galaxies: Dynamical and emission signatures from the Back-flow model Gourab Giri, Bhargav Vaidya, Paola Rossi, Gianluigi Bodo, Dipanjan Mukherjee and Andrea Mignone A&A, 662 (2022) A5 Published online: 25 May 2022 DOI: 10.1051/0004-6361/202142546