| Abstract: |
Stellar and AGN feedback are key drivers of galaxy evolution, affecting not only star formation but also the distribution of matter within and beyond haloes. These processes shape both the dark matter and baryonic components, influencing the internal structure of haloes and the thermal state of the circumgalactic and intergalactic media (CGM and IGM). I will present recent results from the IllustrisTNG, MillenniumTNG, Simba, and FLAMINGO cosmological simulations, which, through their diverse gas mass resolutions (10^5 - 10^8 M_Sun) and volumes (box size 50 Mpc - 2.8 Gpc per side), allow us to probe haloes from 10^9.5 to 10^15.5 M_Sun across a wide redshift range. I will show how baryonic feedback alters halo concentrations and gas distributions in a mass- and redshift-dependent manner, and how different feedback implementations lead to markedly distinct gas density profiles. By combining the insights from simulations with observational constraints from multi-wavelength probes of different gaseous phases within and outside haloes, we can better understand the baryon cycle and improve the theoretical modelling needed to interpret data from current and forthcoming surveys. |
