Fig. 13.
Mean Pearson correlation coefficient of the proper motions projected on the sky after correction of the solar reflex motion. The signal that is present was first observed in a sample of RR-Lyrae stars (Iorio & Belokurov 2019, see their Fig. 5). A radially anisotropic halo explains the pattern, mainly caused by the debris of Gaia-Enceladus.
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