Top panel: Polarization angle and degree in a region of 40 arcsec radius centered on the pulsar in the [2–6] keV energy range. Contours represent the 1,2, and 3σ confidence regions. Bottom panel: Polarization degree as a function of the region size for regions centered on the pulsar. Points show IXPE values with their 1σ uncertainty. Solid lines represent the expectations for various models: a polarized inner torus (PD=75%) embedded into an unpolarized external nebula (green); a polarized extended torus (PD=55%) embedded into an unpolarized external nebula (purple); a polarized extended torus (PD=50%) embedded into an external nebula with the same polarization as seen in radio (red); and a nebula having the same polarization as seen in radio (orange).