Simulated magnetograms and synthetic emission. Strength of the vertical (panel A) and horizontal (panel B) components of the magnetic field at z = 0 Mm; panel B has been gamma-adjusted for display purposes. Panel C: intensity in the core of λ8542; the range is capped for display purposes. Panels D and E: Continuum T_b [3 mm] at full resolution and convolved with a Gaussian kernel with full-width-at-half-maximum of 1.2″; the cyan contours show T_b [3 mm] = 9 kK. The dashed box delimits the area displayed in Figs. 6B and C. The lower right panels show selected λ8542 profiles (normalized intensity) in the flux emergence region. Vertical cuts through various parameters of the simulated atmosphere along the slices S3, S4, and S5 are displayed in Fig. A.6.