Dark Matter Halos from the Inside Out

Figure 7

Distributions of lensing substructure fraction at 𝑧=0 (a) and 𝑧=0.2 (b). The solid histogram is for 1000 merger trees in a cosmology with Ω_𝑚=0.27,𝜎₈=0.80. The dashed histogram is for 1000 merger trees in a cosmology with Ω_𝑚=0.23,𝜎₈=0.85. These two cosmologies are chosen to produce the same abundance of massive clusters at low redshift, so cluster number counts alone would not distinguish between them.

(a)

(b)