X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator? - Mushtukov, A A; Tsygankov, S S; Poutanen, J; Doroshenko, V; Salganik, A; Costa, E; Marco, A Di; Heyl, J; Monaca, F La; Lutovinov, A A; Mereminsky, I A; Papitto, A; et al. (Monthly Notices of the Royal Astronomical Society, 2023)