# Spherical Dehnen potential¶

class galpy.potential.DehnenSphericalPotential(amp=1.0, a=1.0, alpha=1.5, normalize=False, ro=None, vo=None)[source]

Class that implements the Dehnen Spherical Potential from Dehnen (1993)

$\rho(r) = \frac{\mathrm{amp}(3-\alpha)}{4\,\pi\,a^3}\,\frac{1}{(r/a)^{\alpha}\,(1+r/a)^{4-\alpha}}$
__init__(amp=1.0, a=1.0, alpha=1.5, normalize=False, ro=None, vo=None)[source]

NAME:

__init__

PURPOSE:

initialize a Dehnen Spherical Potential; note that the amplitude definitio used here does NOT match that of Dehnen (1993)

INPUT:

amp - amplitude to be applied to the potential (default: 1); can be a Quantity with units of mass or Gxmass

a - scale radius (can be Quantity)

alpha - inner power, restricted to [0, 3)

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:

2019-10-07 - Started - Starkman (UofT)