galpy.potential.planarPotential.phiforce
galpy.potential.planarAxiPotential.epifreq
planarPotential.
Rforce
NAME:
PURPOSE:
evaluate the radial force
INPUT:
R - Cylindrical radius phi= azimuth (optional) t= time (optional)
R - Cylindrical radius
phi= azimuth (optional)
t= time (optional)
OUTPUT:
F_R(R,(phi,t)))
HISTORY:
2010-07-13 - Written - Bovy (NYU)