cADI simulation for the Q_ϕ images of the coronagraphic (left) and non-coronagraphic (middle) J-band observations, after subtracting the central source polarisation. The right panel shows the same simulation for our model image. This image was generated by convolving the Stokes Q and U images with a real IRDIS J-band PSF, computing the Q_ϕ and U_ϕ images, subtracting the central source polarisation by applying a U_ϕ minimisation, and finally applying the cADI algorithm. The model included the presence of an inner disk with an outer radius of 2 au. The white circle marks a radial distance of 200 mas, approximately the separation of the companion. The colour stretch was adaptedindividually for visibility purposes. North is up and east is to the left.