@map_types<EOL><INDENT>def __init__(self,<EOL>centre: dim.Position = (<NUM_LIT:0.0>, <NUM_LIT:0.0>),<EOL>einstein_radius: dim.Length = <NUM_LIT:1.0>):<DEDENT>
super(SphericalIsothermal, self).__init__(centre=centre, axis_ratio=<NUM_LIT:1.0>, phi=<NUM_LIT:0.0>,<EOL>einstein_radius=einstein_radius)<EOL>
Represents a spherical isothermal density distribution, which is equivalent to the spherical power-law
density distribution for the value slope: float = 2.0

Parameters
----------
centre: (float, float)
    The (y,x) arc-second coordinates of the profile centre.
einstein_radius : float
    The arc-second Einstein radius.