Top panel: self-interaction energy density U_SI, thermal energy density U, and gravitational potential energy density W of a sample halo with R_c = 1 kpc and M₂₀₀ = 3 × 10⁹ M_⊙, relative to the interaction energy at the background level . The middle panel shows instead the specific energy, and the bottom panel the cumulative virial. The core radius r_c and halo radius r₂₀₀ are indicated with the inner and outer dotted vertical lines, respectively.