galpy.potential.zvc_range¶
- galpy.potential.zvc_range(Pot, E, Lz, phi=0.0, t=0.0)[source]¶
NAME:
zvc_range
PURPOSE:
Calculate the minimum and maximum radius for which the zero-velocity curve exists for this energy and angular momentum (R such that Phi(R,0) + Lz/[2R^2] = E)
INPUT:
Pot - Potential instance or list of such instances
E - Energy (can be Quantity)
Lz - Angular momentum (can be Quantity)
phi - azimuth (optional; can be Quantity)
t - time (optional; can be Quantity)
OUTPUT:
Solutions R such that Phi(R,0) + Lz/[2R^2] = E
HISTORY:
2020-08-20 - Written - Bovy (UofT)