galpy.potential.planarPotential.phitorque¶
-
planarPotential.
phitorque
(R, phi=0.0, t=0.0)[source]¶ NAME:
phitorquePURPOSE:
evaluate the azimuthal torque = - d Phi / d phiINPUT:
R - Cylindrical radius (can be Quantity)
phi= azimuth (optional; can be Quantity)
t= time (optional; can be Quantity)
OUTPUT:
tau_phi(R,(phi,t)))HISTORY:
2010-07-13 - Written - Bovy (NYU)