Anisotropic NFW DF of the Osipkov-Merritt type¶
- class galpy.df.osipkovmerrittNFWdf(pot=None, ra=1.4, rmax=10000.0, ro=None, vo=None)[source]¶
Class that implements the anisotropic spherical NFW DF with radially varying anisotropy of the Osipkov-Merritt type
\[\beta(r) = \frac{1}{1+r_a^2/r^2}\]with \(r_a\) the anistropy radius.
- __init__(pot=None, ra=1.4, rmax=10000.0, ro=None, vo=None)[source]¶
NAME:
__init__
PURPOSE:
Initialize a NFW DF with Osipkov-Merritt anisotropy
INPUT:
pot - NFW potential which determines the DF
ra - anisotropy radius (can be a Quantity)
rmax= (1e4) maximum radius to consider (can be Quantity); set to numpy.inf to evaluate NFW w/o cut-off
ro=, vo= galpy unit parameters
OUTPUT:
None
HISTORY:
2020-11-12 - Written - Bovy (UofT)