Spatial distribution depicted using the kernel density estimates of the Cartesian coordinates for our RR Lyrae bulge dataset. Blue and red contours show the distributions of prograde and retrograde RR Lyrae stars. The black solid, dashed and dotted lines represent bar angles of 40, 30, and 20 degrees, respectively. The Sun in this perspective would be at Y_Gal = 0 kpc and X_Gal = −8.2 kpc.