Left: Evolution of the torus angular-momentum vector L(t) (blue line) and the precession axis given by the torque, L_axis(t) = iτ_acc(t)/ω_p (green line) in the simulation. The gray lines show their relative position at times spaced by constant intervals of Δt = 1.148 × 10³(GM/c³). Right: Precession angle relative to the precession axis L_axis as function of time, γ_rel(t) = arg[L(t)−iτ(t)/ω_p]. Starting at t₀ = 2.6 × 10³(GM/c³) the torus executes a nearly steady precession with frequency ω_p = 5 × 10⁻⁴c³/(GM).