galpy.potential.Potential.zforce

Potential.zforce(R, z, phi=0.0, t=0.0)[source]

Evaluate the vertical force F_z.

Parameters:

  • R (float or Quantity) – Cylindrical Galactocentric radius.

  • z (float or Quantity) – Vertical height.

  • phi (float or Quantity, optional) – Azimuth (default: 0.0).

  • t (float or Quantity, optional) – Time (default: 0.0).

Returns:

F_z (R,z,phi,t).

Return type:

float or Quantity

Notes

  • 2010-04-16 - Written - Bovy (NYU)