The evolution of obscured AGN across cosmic time -- A large quasar survey for the 2040s
Tanya Urrutia, Darshan Kakkad, Paula S\'anchez-S\'aez, Mojtaba Raouf, Swayamtrupta Panda, Sarah E. I. Bosman, Francisco Pozo Nunez, Annagrazia Puglisi, Sophia Flury, Dragana Ilic, Andjelka B. Kovacevic, Mamta Pandey-Pommier, Giustina Vietri, Sarath Satheesh-Sheeba
TL;DR
This paper proposes a comprehensive large-scale optical spectroscopic survey targeting over 50 million AGN candidates up to redshift 6.5, aiming to unify diverse obscured AGN populations through variability and spectroscopy.
Contribution
It introduces a novel, large multi-object spectroscopic survey plan that combines various AGN selection methods to better understand obscured AGN evolution.
Findings
Unified framework for obscured AGN populations
Potential to significantly increase high-redshift AGN detections
Enhanced understanding of AGN evolution across cosmic time
Abstract
We propose a large quasar demographic optical multi-object spectroscopic (MOS) survey targeting over 50 million AGN candidates up to the highest redshifts possible in the optical (z~6.5), with repeat visits, using a variety of selection criteria available by 2040. A large MOS survey combining all AGN selection methods is the only way to unify a diverse range of different obscured AGN populations within a single, variability- and spectroscopy-based framework, rather than as disjoint classes selected by different methods.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Gamma-ray bursts and supernovae · Astronomy and Astrophysical Research