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【搬运】【wiki】QSO与AGN
【QSO分布特征】 ### 分布方向性 There are more quasars in one direction (towards Hydra) than in the opposite direction. ----<wiki | quasar | modern observations>20220703Sun ### 中心质量估计方法 Central masses of 10^5 to 10^9 solar masses have been measured in