ψ(r, model::Potential)

Potential value for central potential model at radius r.

the Hernquist potential

dψ(r, model::Potential)

Potential derivative value for central potential model at radius r.

the Hernquist potential derivative

d2ψ(r, model::Potential)

Potential second derivative for central potential model at radius r.

the Hernquist potential second derivative