Corner plot of the posterior distribution for the parameters of the RVM model fitted to the PA values obtained from the phase-resolved spectro-polarimetric analysis of the high-energy component. The two-dimensional contours correspond to 68.3, 95.45, and 99.73% confidence levels. The histograms show the normalized one-dimensional distributions for a given parameter derived from the posterior samples. The vertical dashed lines represent the mode of the distribution (central line) and the lower and upper quartiles (68% confidence interval). The mode is calculated using a Gaussian kernel density estimate with a bandwidth of 0.1.