Numerical Simulations of Galactic Outflows and Evolution of the IGM

TL;DR

This paper reviews simulation techniques for galactic outflows and their significant influence on galaxy evolution and the intergalactic medium, highlighting the complex feedback processes involved.

Contribution

It provides a comprehensive overview of methods used to simulate galactic outflows and their effects on galaxy and IGM evolution.

Findings

Galactic outflows regulate star formation and galaxy growth.

Outflows transport metals and energy into the IGM.

Simulations help understand galaxy-IGM interactions.

Abstract

Galactic outflows play a major role in the evolution of galaxies and the intergalactic medium (IGM). The energy deposited into the interstellar medium by supernovae and active galactic nuclei can accelerate the gas past the escape velocity, and eject it into the IGM. This will affect the subsequent evolution of the galaxy, by reducing or eliminating star formation, and quenching the accretion of matter onto the central AGN. Galactic outflows is the main process by which energy and processed interstellar matter is transported into the IGM. This affects the subsequent formation of other galaxies. The energy carried by outflows can strip protogalactic halos of their gas, preventing galaxies from forming. Conversely, the metals carried by outflows can modify the composition and cooling rates of the gas in protogalactic halos, favoring the formation of galaxies. In this paper, I review the various techniques used to simulate galactic outflows and their impact on galaxy and IGM evolution.