potential_gradient# jeanspy.model_jax.AxisymmetricZhaoModel.potential_gradient Class and construction: AxisymmetricZhaoModel. AxisymmetricZhaoModel.potential_gradient(R_pc, z_pc, *, params, n_force=96)[source]# Return (dPhi/dR,dPhi/dz) in (km/s)^2/pc; n_force is static under JIT.