Kinematics of the warm ionised gas. The panels from the upper two rows display the spatially resolved radial velocity maps for the [O II] λ3727, [O III] λ5007, Hβ, [N II] λ6584, [S II] λ6718, 6732 gas in the BCG of the M1931 galaxy cluster. The colour-bar displays the radial velocity of the gas with respect to the BCG rest frame, measured in [km/s]. The panels from the lower two rows show the spatially resolved velocity dispersion maps for the same emission lines, measured in [km/s]. The white background in all plots correspond to the spaxels with an S/N < 10. The cross shows the location of the AGN. The contours show the Hα flux intensity.