Speaker
Jiale Zhou
(Shanghai Jiao Tong University)
Description
We determine the depletion radius from the stacked mass flow rate (MFR) profiles of dark matter haloes in a cosmological simulation and explore its dependence on halo properties. We find that the MFR profiles exhibit near self-similarity for haloes with different masses. The primary factor that determines the depletion radius is still the mass accretion rate, and the relation is similar to that of splashback radius. However, their evolution trends are opposite, while the depletion radius following the self-similar spherical collapse model. By analysing the structure of haloes in phase space, we find that this dependence arises from the overdensity definition of halo.
Primary authors
Jiale Zhou
(Shanghai Jiao Tong University)
Jiaxin Han
(Shanghai Jiao Tong University)
