Conveners
Tuesday afternoon: Thermal instability & multiphase ICM
- Mark Voit (Michigan State University)
The intracluster medium (ICM) is stratified so Kolmogorov’s picture of isotropic/homogeneous turbulence needs to be modified. Similarly, cool cores show multiphase gas with cold/dense clouds embedded in the diffuse hot ICM. I shall present results from idealized stratified turbulence simulations and idealized multiphase periodic box simulations with heating and cooling. I shall present common...
Energy transport across a wide range of dynamical scales in the intracluster medium is one of the most interesting topics in current research and future interest. Hot baryons, visible in the X-rays, need to be stably sustained against radiative cooling over a large inner fraction of the cluster virial radius. A historical motivation has been the lack of sufficient observed cold gas in the...
The conditions leading to large reservoirs of molecular clouds and star formation in central cluster galaxies are determined by atmospheric conditions on large scales. The thermodynamic properties of cooling core and non-cooling core cluster atmospheres diverge at radii approaching R_2500, or roughly 400 kpc radius in a 10E14 solar mass cluster. These conditions are driven
by an excess of...
In this talk, I want to describe what sets the mass transfer between the phases in a turbulent, multiphase medium. I will show analytic and simulation results which suggest (i) a "survival criterion", (ii) mass growth rates, and (iii) a power-law mass function of the cold gas.
