Image Details
Caption: Figure 9.
Phase-dependent 2.0–7.5 keV (normalized) flux (top, black lines), polarization degree (center, red lines), and polarization angle (bottom, blue lines) simulated with the ray-tracing code, including (solid lines) or neglecting (dashed lines) vacuum birefringence effects. The black diamonds with 1σ error bars show the IXPE data.
© 2026. The Author(s). Published by the American Astronomical Society.