Cosmological Simulation of Galaxy Groups and Clusters-II: Studying Different Modes of Feedback through X-ray Observations

TL;DR

This study uses cosmological simulations and synthetic X-ray observations to analyze how different AGN feedback modes influence the hot gas in galaxy groups and clusters, revealing their signatures and detectability.

Contribution

It introduces a detailed simulation-based approach to distinguish various AGN feedback modes through X-ray emission analysis, including synthetic observations with Chandra.

Findings

Jet and X-ray feedback significantly suppress diffuse X-ray emission.

High-redshift feedback signatures are challenging to detect with current telescopes.

Future X-ray missions like Lynx could observe these feedback effects.

Abstract

The impact of feedback from Active Galactic Nuclei (AGN) on the cosmological evolution of the large scale structure is a long studied problem. However, it is still not well understood how the feedback energy couples to the ambient medium to influence the properties of AGN host galaxies and dark matter halos. In this work we investigate different modes of AGN feedback and their effect on the surrounding medium by probing the diffuse X-ray emission from the hot gas inside galaxy groups and clusters. For this purpose, we use the cosmological hydrodynamic simulation SIMBA to theoretically calculate the X-ray emission from simulated galaxy clusters/groups with the help of the Astrophysical Plasma Emission Code (APEC). We also perform synthetic observations of these systems with the Chandra X-ray telescope using the ray-tracing simulator Model of AXAF Response to X-rays (MARX). Our results show that in addition to the radiative wind mode of feedback from the AGN, jet and X-ray mode of feedback play significant roles in suppressing the X-ray emission from the diffuse gas in the vicinity of the black hole. Our mock observational maps suggest that the signatures of AGN feedback from the high redshift objects may not be detected with the instrumental resolution of current X-ray telescopes like Chandra, but provide promising prospect for detection of these features with potential X-ray missions such as Lynx.