Optical variability is a common property of AGNs, Which provides a potentially powerful tool to probe the physics of AGNs.
光变是活动星系核（AGN）的共同特征， 光变规律的研究已成为人类探索活动星系核物理的有力手段。
My research interests mainly include quasars and active galactic nuclei (AGNs), supermassive black holes and their accretion physics.
我的研究兴趣主要包括类星体与活动星系核、超大质量黑洞以及它们的吸积物理。
Now they just needed to figure out whether a galaxy was distorted or not, in order to determine whether misshapen galaxies were more likely to have AGNs.
现在他们只需要搞清楚星系是否被扭曲了，就能确认畸形星系是否更容易产生agn。
The structural variations and superluminal motion within some QSSs and AGNs are considered as one of the most important astrophysical phenomena revealed by VLBI.
类星体和活动星系核结构的变化及其中的视超光速运动，被认为是用VLBI方法所揭示的最重大的天体物理现象之一。
Most galaxies are like that, as it happens, but there are a few rougher neighborhoods where the black holes cause their share of mayhem in the form of active galactic nuclei (AGNs).
大部分星系都是如此，但有一些粗暴的邻居的黑洞让它们以活动星系核(agn)的形式对外散布伤害。
The team chose 140 active galactic nuclei, or AGNs, by selecting galaxies that emit a lot of X-rays, which can Pierce the galactic gas and dust that might otherwise block the nuclei from view.
课题小组选择了140个活动星系核，或简称agns，这些星系都放射出大量的X射线，X射线能穿透阻挡观测的气体和尘埃。
The team chose 140 active galactic nuclei, or AGNs, by selecting galaxies that emit a lot of X-rays, which can Pierce the galactic gas and dust that might otherwise block the nuclei from view.
课题小组选择了140个活动星系核，或简称agns，这些星系都放射出大量的X射线，X射线能穿透阻挡观测的气体和尘埃。
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