Burkert potential¶
- class galpy.potential.BurkertPotential(amp=1.0, a=2.0, normalize=False, ro=None, vo=None)[source]¶
BurkertPotential.py: Potential with a Burkert density
\[\rho(r) = \frac{\mathrm{amp}}{(1+r/a)\,(1+[r/a]^2)}\]- __init__(amp=1.0, a=2.0, normalize=False, ro=None, vo=None)[source]¶
NAME:
__init__
PURPOSE:
initialize a Burkert-density potential
INPUT:
amp - amplitude to be applied to the potential (default: 1); can be a Quantity with units of mass density or Gxmass density
a = scale radius (can be Quantity)
- normalize - if True, normalize such that vc(1.,0.)=1., or, if
given as a number, such that the force is this fraction of the force necessary to make vc(1.,0.)=1.
ro=, vo= distance and velocity scales for translation into internal units (default from configuration file)
OUTPUT:
(none)
HISTORY:
2013-04-10 - Written - Bovy (IAS)
2020-03-30 - Re-implemented using SphericalPotential - Bovy (UofT)