Test for halo-mass dependence in circumgalactic metal diffusion

Investigate whether and how the metal diffusion rate in the circumgalactic medium depends on host dark matter halo mass across the relevant mass range, replacing the current assumption of mass-independent diffusion if warranted.

Background

The paper models r-process transport via turbulent diffusion informed by zoom-in simulations. While these simulations did not reveal a clear dependence of diffusion on halo mass, the authors note that a dedicated paper is needed to assess whether metal diffusion rates vary with halo mass, which could change enrichment timescale estimates.