Channel maps of the SO(2₃−1₂) blue-shifted emission towards SVS13-A. Each panel shows the emission shifted in velocity with respect to the systemic velocity (+8.5 km s⁻¹, Podio et al. 2021) by the value given in the upper right corner. The positions of SVS13-A and VLA3 continuum peaks are marked by white stars, the beam is in the bottom-right corner. In grey scale (and black contour) the 3 mm continuum image is shown (Fig. 1). First contours and steps are 3σ (21 mJy beam⁻¹). The pair of blue lines delineates the jet’s trajectory, as marked by the slowest (∼−24 km s⁻¹, PA = ∼140^∘) and the fastest (∼−106 km s⁻¹, PA ∼154^∘) velocities.