Evolution of the radial anisotropy profile β(r) in Plummer models without a central IMBH, with a Salpeter IMF, N = 10⁶, and from left to right ξ₀ = 1 (isotropic), 1.5 (limit for stability), and 2.5 (critical, for consistency). The thin dashed lines mark the initial (analytical) anisotropy profile, while the dot-dashed lines mark the profile β at the indicated time of core collapse t_cc.