Raouf, M.; Purabbas, M.H.; Fazel Hesar, F. Impact of Active Galactic Nuclei Feedback on the Dynamics of Gas: A Review Across Diverse Environments. Galaxies2024, 12, 16.
Raouf, M.; Purabbas, M.H.; Fazel Hesar, F. Impact of Active Galactic Nuclei Feedback on the Dynamics of Gas: A Review Across Diverse Environments. Galaxies 2024, 12, 16.
Raouf, M.; Purabbas, M.H.; Fazel Hesar, F. Impact of Active Galactic Nuclei Feedback on the Dynamics of Gas: A Review Across Diverse Environments. Galaxies2024, 12, 16.
Raouf, M.; Purabbas, M.H.; Fazel Hesar, F. Impact of Active Galactic Nuclei Feedback on the Dynamics of Gas: A Review Across Diverse Environments. Galaxies 2024, 12, 16.
Abstract
This review examines the relationship between blackhole activity and kinematic gas-star misalignment in brightest group galaxies (BGGs) with different merger rates. The formation history of galaxy groups is assessed through "age-dating" as an indicator of distinct major mergers involving the BGG. BGGs within groups characterized by a higher frequency of major mergers are more likely to host active SMBHs. A consistent correlation is identified between the level of black hole activity, as indicated by the 1.4 GHz and 325 MHz radio emissions, and the degree of kinematic misalignment between the gas and stellar components in BGGs. In dynamically relaxed groups, where blackhole accretion rate is relatively (∼1 dex) lower due to the lack of recent ( ≤1 Gyr) major mergers, there is reduced (∼ 30%) misalignment between the gas and stellar components of BGGs compared to unrelaxed groups. Additionally, the study reveals that BGGs in unrelaxed groups show higher levels of star formation rate and increased occurrence of mergers, contributing to observed color differences. Exploring the properties and dynamics of the gas disc influenced by mechanical AGN feedback through hydrodynamic simulations suggests that AGN wind-induced effects further lead to persistent gas misalignment of the disk around the supermassive blackhole.
Keywords
galaxy groups, blackhole activity, AGN feedback, kinematic misalignment, mergers, group dynamics, radio luminosity, stellar populations, galaxy formation
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
