Dual AGN in the Horizon-AGN simulation : J/MNRAS/514/640

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Authors : Volonteri M. orcid , Pfister H., Beckmann R. (hide) , Pfister H., Beckmann R. et..al

VizieR DOI : 10.26093/cds/vizier.75140640
Bibcode : 2022MNRAS.514..640V (ADS) (Simbad) (Objects)
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CDS Keywords : Models; Active gal. nuclei
UAT : Astronomical models, Active galactic nuclei

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Inserted into VizieR : 17-Jun-2022
Last modification : 22-Aug-2024

Dual AGN in the Horizon-AGN simulation and their link to galaxy and massive black hole mergers, with an excursus on multiple AGN. (2022)

Keywords : methods numerical - galaxies: active

Abstract:The occurrence of dual active galactic nuclei (AGN) on scales of a few tens of kpc can be used to study merger-induced accretion on massive black holes (MBHs) and to derive clues on MBH mergers, using dual AGN as a parent population of precursors. We investigate the properties of dual AGN in the cosmological simulation HAGN. We create catalogs of dual AGN selected with distance and luminosity criteria, plus sub-catalogs where further mass cuts are applied. We divide the sample into dual AGN hosted in different galaxies, on the way to a merger, and into those hosed in one galaxy, after the galaxy merger has happened. We find that the most luminous AGN in a pair has higher Eddington ratio and mass than the general AGN population, but that the ...(more)
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We build our simulated dual AGN catalog using the cosmological simulation Horizon-AGN. It has a volume of (140)^3^ comoving Mpc and it includes galaxy formation physics (cooling, star formation, stellar feedback) and MBH physics (accretion, thermal and kinetic AGN feedback, drag force from gas, MBH mergers). Two families of dual AGN catalogs are produced: "all" dual AGN and "pure" dual AGN. The difference is that in the "pure" sample multiple AGN are first removed, for instance a triple AGN system is not considered as the combination of 3 separate dual AGN. In the "all" sample a triple AGN system is counted as 3 separate dual AGN. In the "all" catalogs, one can build sub-samples with different luminosity/distance cuts based on the general catalog. In the "pure" catalogs, one cannot simply apply new thresholds, because any different cuts would modify the multiple AGN population and therefore as a consequence the "pure" dual AGNs. In the paper all results are shown for the "pure" sample and a separate analysis is performed on multiple AGN. The analysis is performed at redshifts z=0, z=0.5, z=1, z=1.5, z=2, z=2.5, z=3.
Marta Volonteri, martav(at)iap.fr

                


                

                    

                


                

                    

                


                

                    
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