NGC 4993 SED data: Wu et al. (2018; open circles); Levan et al. (2017) (open squares); Blanchard et al. (2017) IR-optical (asterisks): AGN (from NGC 5252) flux in the X-rays (dots). bb flux corresponding to 4000 K (red dashed). Left: models modAGN2 (magenta dot-dashed), modSB (blue dotted) and modSD (magenta solid) Right: model modAGN1 (black solid); other symbols as in Fig. 1 left diagram. Each model is represented by two lines, one is the bremsstrahlung and the other is the dust reprocessed radiation. The models are described in Table 1.