Schematic illustration of the expected dust grain (dark blue ellipses) alignment behavior according to IDG and RAT alignment in the center plane perpendicular (panel a)) and parallel (panel b)) to the symmetry axis of the outflow lobes (blue). The angle ϵ is defined to be between the predominant direction of the radiation (light blue arrows) and the magnetic field lines (red). The white arrows indicate the definition of the inclination angle.