Accretion luminosity (source code)

= Accretion luminosity
{title2=$L_{\rm acc}$}

Matter accreting at rate $\dot M$ onto a <star> of <mass> $M$ and <radius> $R$ releases gravitational power of order
$$
L_{\rm acc}=\frac{GM\dot M}{R},
$$
up to an efficiency and an inner-boundary correction.