galpy.potential.evaluaterforces¶
- galpy.potential.evaluaterforces(Pot, R, z, phi=None, t=0.0, v=None)[source]¶
Evaluate the radial force at a given position due to a potential, force or a list of potentials/forces.
- Parameters:
Pot (Potential, DissipativeForce or list of Potential or DissipativeForce instances) – A potential, dissipative force or a list of such objects.
R (float or Quantity) – Cylindrical Galactocentric distance.
z (float or Quantity) – Distance above the plane.
phi (float or Quantity, optional) – Azimuth (default: None).
t (float or Quantity, optional) – Time (default: 0.0).
v (numpy.ndarray or Quantity, optional) – Current velocity in cylindrical coordinates. Required when including dissipative forces. Default is None.
- Returns:
The radial force F_r(R,z,phi,t).
- Return type:
float or Quantity
Notes
2016-06-10 - Written - Bovy (UofT)