Power-law density spherical potential with an exponential cut-off

class galpy.potential.PowerSphericalPotentialwCutoff(amp=1.0, alpha=1.0, rc=1.0, normalize=False)

Class that implements spherical potentials that are derived from power-law density models

\[\rho(r) = \frac{\mathrm{amp}}{r^\alpha}\,\exp\left(-(r/rc)^2\right)\]

__init__(amp=1.0, alpha=1.0, rc=1.0, normalize=False)

NAME:

__init__

PURPOSE:

initialize a power-law-density potential

INPUT:

amp= amplitude to be applied to the potential (default: 1)

alpha= inner power

rc= cut-off radius

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.

OUTPUT:

(none)

HISTORY:

2013-06-28 - Written - Bovy (IAS)