galpy.potential.planarPotential.omegac

planarPotential.omegac(R, t=0.0)

Calculate the circular angular speed at R in potential Pot.

Parameters:

• R (float or Quantity) – Galactocentric radius.

• t (float or Quantity, optional) – Time (default: 0.0)

Returns:

Circular angular speed.

Return type:

float or Quantity

Notes

• Written on 2011-10-09 by Bovy (IAS).