Cake Talk by Martin Sparre from Potsdam University and AIP Leibniz
The physics of multiphase gas is important for many astrophysical applications. In this talk I focus on the circumgalactic medium (CGM) and the stripped tails of jellyfish galaxies. In both applications a hot diffuse gas-phase interacts with a cold-dense phase. Based on idealized (magneto-)hydrodynamical simulations with the AREPO code, I show two important results for multiphase astrophysical gases: 1) there exists a growth regime, where the mass in the cold phase increases in time, and 2) cooling gas is unstable and clumpy with structure on spatial scales as small as the cooling length. I show how the long observed tails of jellyfish galaxies can be explained, and I discuss the existence of cold gas in the CGM.