PUBLICATIONS OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE104, Page 257-260, https://doi.org/10.69646/aob104p257
PROCEEDINGS of the XX Serbian Astronomical Conference, Belgrade, October 16 - 20, 2023, Edited by Jelena Petrović, Dušan Marčeta and Ana Lalović
Published by: Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia

Abstract. Due to hierarchical evolution of galaxies and the fact that almost all massive galaxies have supermassive black hole (SMBH) in their center, galaxy mergers lead to forma- tion of dual SMBH systems or supermassive binary black holes (SMBBH). In order to better understand how properties of SMBBH depend on properties of merging galaxies, we inves- tigate these systems, circumstances of their formation and activity using the results from cosmological simulation IllustrisTNG300. We find that major mergers of gas rich galaxies are the main reason for formation of dual AGNs, with tendency to form more luminous AGNs.