Class that implements the double exponential disk potential rho(R,z) = rho_0 e^-R/h_R e^-|z|/h_z
NAME:
__init__
PURPOSE:
initialize a double-exponential disk potential
INPUT:
amp - amplitude to be applied to the potential (default: 1)
hr - disk scale-length in terms of ro
hz - scale-height
tol - relative accuracy of potential-evaluations
maxiter - scipy.integrate keyword
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:
DoubleExponentialDiskPotential object
HISTORY:
2010-04-16 - Written - Bovy (NYU)
2013-01-01 - Re-implemented using faster integration techniques - Bovy (IAS)