galpy.potential.Potential.rforce¶
- Potential.rforce(R, z, **kwargs)[source]¶
NAME:
rforce
PURPOSE:
evaluate spherical radial force F_r (R,z)
INPUT:
R - Cylindrical Galactocentric radius (can be Quantity)
z - vertical height (can be Quantity)
phi - azimuth (optional; can be Quantity)
t - time (optional; can be Quantity)
v - current velocity in cylindrical coordinates (optional, but required when including dissipative forces; can be a Quantity)
OUTPUT:
F_r (R,z,phi,t)
HISTORY:
2016-06-20 - Written - Bovy (UofT)