Stacked images of NGC 1052. Left panel: stacked image at 43 GHz obtained combining the three observations reported in Fig. 1. Each map is aligned with each respective core as described in Sect. 2.3 and convolved with a circular beam of 0.4 mas. The contours start at 3σ (σ = 0.15 mJy/beam) and increase by a factor of two up to 384σ. Right panel: stacked image at 86 GHz obtained by combining the observation reported in Table 1 and the 86 GHz map shown in Baczko et al. (2022). The circular beam is 0.144 mas and the contours start at 3σ (σ = 0.8 mJy/beam).