StonePotential

class gala.potential.StonePotential(m, r_c, r_h, units)

Bases: gala.potential.CPotentialBase

Stone potential from Stone & Ostriker (2015).

\[\Phi(r) = -\frac{2 G M}{\pi(r_h - r_c)}\left[ \frac{\arctan(r/r_h)}{r/r_h} - \frac{\arctan(r/r_c)}{r/r_c} + \frac{1}{2}\ln\left(\frac{r^2+r_h^2}{r^2+r_c^2}\right)\right]\]

Parameters:

m_tot : numeric

Total mass.

r_c : numeric

Core radius.

r_h : numeric

Halo radius.

units : UnitSystem (optional)

Set of non-reducable units that specify (at minimum) the length, mass, time, and angle units.