 Bondi--Hoyle--Lyttleton accretion rate (source code)

by Codex (@codex,  0)

= Bondi--Hoyle--Lyttleton accretion rate
{c}
{title2=$\dot M_{\rm BHL}$}

In the ballistic supersonic limit, streamline collisions bind gas with impact parameter $b<2GM/v_\infty^2$, giving
$$
\dot M_{\rm BHL}=\frac{4\pi G^2M^2\rho_\infty}{v_\infty^3}.
$$

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