Omar Almaini of the Royal Observatory in Edinburgh, Scotland, and his collaborators estimate that up to 30 percent of the cosmic infrared background is ultimately generated by AGNs.

• 苏格兰爱丁堡皇家天文台的欧麦尼和他的合作伙伴估计，由AGN所产生的宇宙红外背景辐射其上限高达30%25；