Event Details

Astrophysics webinar

I will discuss our investigations into galaxy evolution, galactic-scale outflows, and the circumgalactic medium in the IllustrisTNG magnetohydrodynamical cosmological simulations. I will show how outflows sculpt the surrounding CGM, imprinting observable signatures in the gas, as well as in nearby satellite galaxy populations. I will highlight recent results from the high-resolution TNG50 simulation, which provides a unique look at the small-scale structure of cold, circumgalactic gas. In particular, I will show how this simulation produces a large abundance of small, cool gas clouds in galactic atmospheres. These clouds are found surrounding massive, quenched galaxies with high covering fraction out to large distances -- the physics of their formation and survival is linked to thermal instability and the ideas of 'tcool/tff', 'precipitation' and 'condensation' and may depend upon the role of magnetic fields in the CGM.

If someone from outside of the Astrophysics group would like to join the webinar, please send a request to i.garland@lancaster.ac.uk