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Discovery and Characterization of Galactic-scale Dual Supermassive Black Holes Across Cosmic Time

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arxiv 2306.15527 v1 pith:3XNNIQTT submitted 2023-06-27 astro-ph.GA astro-ph.CO

Yue Shen , J. Andrew Casey-Clyde , Yu-Ching Chen , Arran Gross , Melanie Habouzit , Hsiang-Chih Hwang , Yuzo Ishikawa , Jun-Yao Li
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Xin Liu Chiara M. F. Mingarelli D. Porquet Aaron Stemo Ming-Yang Zhuang
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keywords formationpairssmbhareablackbroadcharacterizationdiscovery
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The hierarchical structure formation paradigm predicts the formation of pairs of supermassive black holes in merging galaxies. When both (or one) members of the SMBH pair are unobscured AGNs, the system can be identified as a dual (or offset) AGN. Quantifying the abundance of these AGN pairs as functions of separation, redshift and host properties is crucial to understanding SMBH formation and AGN fueling in the broad context of galaxy formation. The High Latitude Wide Area Survey with Roman, with its unprecedented combination of sensitivity, spatial resolution, area and NIR wavelength coverage, will revolutionize the study of galactic-scale environments of SMBH pairs. This white paper summarizes the science opportunities and technical requirements on the discovery and characterization of SMBH pairs down to galactic scales (i.e., less than tens of kpc) over broad ranges of redshift (1<z<7) and luminosity (Lbol>1E42 erg/s).

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Cited by 1 Pith paper

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  1. Large-scale dual AGN in large-scale cosmological hydrodynamical simulations

    astro-ph.CO 2024-11 conditional novelty 6.0 of 10

    Across nine cosmological simulations, dual AGN number densities range from 1e-8 to 1e-3 cMpc^-3 at z = 0-7, with fractions of 0-6% and a redshift peak at z = 1-3.

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