This figure shows the polarimetric analysis results. Each plot contains four subpanels: The top-left subpanel shows the posterior distribution of the PA in the detector plane (Det. PA); the top-right subpanel shows the best-fit modulation curve (solid line) together with 1000 randomly selected realizations from the MCMC simulations (gray lines); the bottom-left subpanel shows the joint posterior distribution of PF and Det. PA, with contours corresponding to the 68%, 95%, and 99% credible regions; and the bottom-right subpanel shows the posterior distribution of the PF. (a) Time-integrated case (T₀ − 2 to T₀ + 106 s; contours in navy blue). (b) Episode 1 (T₀ − 2 to T₀ + 38 s; contours in green). (c) Episode 2 (T₀ + 77 to T₀ + 106 s; contours in red).