Long-term spectroscopic monitoring of Mrk 1018
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Changing-look active galactic nuclei (CL-AGNs), characterized by the emergence or disappearance of broad lines accompanied by extreme continuum flux variability, have drawn much...
变貌活动星系核（Changing-look active galactic nuclei，CL-AGNs）以伴随极端连续谱流量变化的宽发射线出现或消失为特征，已受到学界的广泛关注……
