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]¶

Initialize a Dehnen Spherical Potential.

Parameters:

amp (float or Quantity, optional) – Amplitude to be applied to the potential (default: 1); can be a Quantity with units of mass or Gxmass.
a (float or Quantity, optional) – Scale radius.
alpha (float, optional) – Inner power, restricted to [0, 3).
normalize (bool or float, optional) – 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 (float or Quantity, optional) – Distance scale for translation into internal units (default from configuration file).
vo (float or Quantity, optional) – Velocity scale for translation into internal units (default from configuration file).

Notes