galpy.potential.Potential.phitorque

Potential.phitorque(R, z, phi=0.0, t=0.0)

Evaluate the azimuthal torque.

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:

tau_phi(R, z, phi, t).

Return type:

float or Quantity

Notes

• 2010-07-10 - Written - Bovy (NYU)