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)