Neutron stars in X-ray binaries as observed by the IXPE

The Imaging X-ray Polarimetry Explorer, recently awarded by the American Astronomical Society with the Bruno Rossi prize, during the first 2 years observed accreting neutron stars having strong magnetic fields, classical X-ray pulsars, and also weakly magnetized ones, which do not show pulsations. For the first class, IXPE allowed us to determine the geometry of these systems from the polarization properties but also showed a more complex scenario with respect to the theoretical predictions. For non-pulsating sources, spectropolarimetry, performed with IXPE, allows us to model the geometry and the physical status of the different emitting regions (accretion disk, boundary/spreading layer) in a completely novel way. In this talk, I will present some of the recent results obtained for X-ray binaries hosting accreting neutron stars.