Speaker
Description
Observations and simulations both reveal that circumgalactic medium (CGM) gas is highly dynamic and inhomogenous, with signs of turbulent, rotational, and bulk flow motions. In particular, turbulent gas motions can be measured in both absorption and emission lines as line broadening, but it is unclear what drives these turbulent motions and how well such observations trace the true structure of turbulence. I will show how the strength and morphology of CGM turbulence is affected by galactic outflows in the Figuring Out Gas & Galaxies In Enzo (FOGGIE) high-resolution cosmological simulations, and how this turbulence can be measured with mock observations in both absorption and emission lines. I will also discuss how turbulent motions in the CGM can drastically affect the pressure and energy structure of the entire galactic ecosystem and disrupt accreting flows of gas, thus playing an important role in the evolution of galaxies themselves.
