Halo mass function. The halo mass is calculated within R₂₀₀. The count of halos is shown per logarithmic mass interval for different slope indexes n_B with a constant magnetic field strength, B_λ = 0.05nG. The dashed gray line shows a power law dN/dM ∼ M^−1.96 fitted to the unperturbed power spectrum. The bottom panel shows the ratio of the halo mass function of each PMF model to the unperturbed model. The dashed lines correspond to the fit given by Eq. (12).