H₂ excitation diagram. Green and red points are respectively the shock/LINER-dominated and the AGN-dominated spaxels (from Section 4.2.1). Red and orange crosses represent the rebinning regions near the southern and northern nuclei. Black square with error bars are the median and the standard deviation of all these points. Black circle with error bars are derived from the estimation of T_rot and T_vib by Riffel et al. (2021) integrating NGC 6240 data in a slightly wider FoV. Black dashed curve represents the thermal emission and on the secondary axis, we have T_rot and T_vib. Each point on the curve represents temperatures from 1000 to 6000 K, in steps of 1000 K, from left to right. The orange ellipse represents the region occupied by non-thermal UV excitation models of Black & van Dishoeck (1987) and the pink polygon covers the region of the photoionization code CLOUDY for AGN models of Dors et al. (2012). The green filled rectangle covers the locus of the thermal UV excitation models of Sternberg & Dalgarno (1989). The filled blue squares are the UV thermal models from Davies et al. (2003). The purple stars are models of X-ray-irradiated gas from Lepp & McCray (1983) and Draine & Woods (1990) and the cyan star is from the shock model of Kwan et al. (1977).