Isochrone potential¶
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class
galpy.potential.
IsochronePotential
(amp=1.0, b=1.0, normalize=False, ro=None, vo=None)¶ Class that implements the Isochrone potential
\[\Phi(r) = -\frac{\mathrm{amp}}{b+\sqrt{b^2+r^2}}\]with \(\mathrm{amp} = GM\) the total mass.
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__init__
(amp=1.0, b=1.0, normalize=False, ro=None, vo=None)¶ NAME:
__init__PURPOSE:
initialize an isochrone potentialINPUT:
amp= amplitude to be applied to the potential, the total mass (default: 1); can be a Quantity with units of mass density or Gxmass density
b= scale radius of the isochrone potential (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:
2013-09-08 - Written - Bovy (IAS)
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