Image Details
Caption: Figure 1.
Normalized Stokes parameters U/I versus Q/I for the IXPE observations of Cyg X-3. HS 2022 in blue, IMS 2022 in yellow, HS 2023 in green, and SS 2024 in red. The error bars are plotted at 1σ CL. In the case of HS 2023, we also plot the change of the polarization properties with the orbital phase in fainter green, numbered 1–12, with bin 1 centered on phase 0. The light-green points are shown without error bars, which are on average Δ(Q/I) ≈ Δ(U/I) ≈ 2% (1 σ). The gray grid represents the PD (in percent) and PA (in degrees).
© 2026. The Author(s). Published by the American Astronomical Society.