Press-Schechter · Counting Halos
unseel.com · Gaussian field · δ_c ≈ 1.686 · mass function
Threshold δ_c = 1.686
Halos formed 0
Stage
Density field
Collapse threshold δ_c
Collapsed halos
Mass function dn/dM
Unseel.com · Press-Schechter Formalism