Continuous evolution of the polarization properties in the transient X-ray pulsar RX J0440.9+4431/LS V +44 17Q. C. Zhao, L. Tao, S. S. Tsygankov, A. A. Mushtukov, H. Feng, M. Y. Ge, H. C. Li, S. N. Zhang and L. ZhangA&A, 693 (2025) A241DOI: https://doi.org/10.1051/0004-6361/202452872