Extended Data Fig. 2: Correlation analysis.
From: Rapid quasi-periodic oscillations in the relativistic jet of BL Lacertae
a, z-Transformed discrete correlation function correlations between the γ-ray and R-band light curves for the entire dataset (black), between the γ-ray flux and R-band flux density residuals (blue) and between the theoretical γ-ray and R-band light curves (red) during the highest outburst state shown in Fig. 2. b, z-Transformed discrete correlation function correlations between the R-band flux density and degree of polarization for similar periods as in plot a. The dotted red horizontal lines correspond to 3σ probability of chance occurrence.
