Triaxial Gaussian potential¶
- class galpy.potential.TriaxialGaussianPotential(amp=1.0, sigma=5.0, b=1.0, c=1.0, zvec=None, pa=None, glorder=50, normalize=False, ro=None, vo=None)[source]¶
Potential of a triaxial Gaussian (Emsellem et al. 1994):
\[\rho(x,y,z) = \frac{\mathrm{amp}}{(2\pi\,\sigma)^{3/2}\,b\,c}\,e^{-\frac{m^2}{2\sigma^2}}\]where \(\mathrm{amp} = GM\) is the total mass and \(m^2 = x^2+y^2/b^2+z^2/c^2\).
- __init__(amp=1.0, sigma=5.0, b=1.0, c=1.0, zvec=None, pa=None, glorder=50, normalize=False, ro=None, vo=None)[source]¶
NAME:
__init__
PURPOSE:
initialize a Gaussian potential
INPUT:
amp - amplitude to be applied to the potential (default: 1); can be a Quantity with units of mass or Gxmass
sigma - Gaussian dispersion scale (can be Quantity)
b - y-to-x axis ratio of the density
c - z-to-x axis ratio of the density
zvec= (None) If set, a unit vector that corresponds to the z axis
pa= (None) If set, the position angle of the x axis (rad or Quantity)
glorder= (50) if set, compute the relevant force and potential integrals with Gaussian quadrature of this order
ro=, vo= distance and velocity scales for translation into internal units (default from configuration file)
OUTPUT:
(none)
HISTORY:
2020-08-18 - Started - Bovy (UofT)