galpy.potential.evaluateplanarR2derivs¶
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galpy.potential.
evaluateplanarR2derivs
(Pot, R, phi=None, t=0.0)[source]¶ NAME:
evaluateplanarR2derivsPURPOSE:
evaluate the second radial derivative of a (list of) planarPotential instance(s)INPUT:
Pot - (list of) planarPotential instance(s)
R - Cylindrical radius (can be Quantity)
phi= azimuth (optional; can be Quantity)
t= time (optional; can be Quantity)
OUTPUT:
F_R(R(,phi,t))HISTORY:
2010-10-09 - Written - Bovy (IAS)