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alcock-paczynski test 1baryon acoustic oscillations 1cosmological parameters 1dark energy 1lyman-alpha forest 1

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20242026
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astro-ph.GA2024

Changing-look Active Galactic Nuclei from the Dark Energy Spectroscopic Instrument. I.Sample from the Early Data

Wei-Jian Guo, Hu Zou, Victoria Anne Fawcett +34

Changing-look Active Galactic Nuclei (CL AGN) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines, associated with a transient…