Chandra observations of the Centaurus A galaxy, where the star formation rate is extremely high, suggest that a massive AGN outburst occurred about 10 million years ago.

• 根据钱卓望远镜的观测，在半人马座A星系有著非常快速的恒星生成率，这表示在1000万年前曾经有颗超大质量AGN爆发过。