Figure 1: Average unobscured radio-quiet AGN spectrum from far-infrared to hard X-rays, as compiled by Manners (2002; [41]). The contributions from each component are shown separately together with the total AGN emission (solid line). Most of the AGN radiation appears in three regions: infrared (reemission from dust; dashed red line), UV and optical (accretion disk; dot-dot-dot-dashed blue line), and X-rays (hot corona and reflection from the accretion disk; dashed green and dot-dashed cyan lines). At longer wavelengths, >100 μm, a starburst component associated with the host galaxy dominates (dotted magenta line).