Charles F. Gammie
= Charles F. Gammie
{c}
<Charles F. Gammie> studies <accretion disks>, <black holes> and computational approaches to their <dynamics>. His 2001 study used local, razor-thin models to investigate <gravitational instability> in a cooling <astrophysical disk>.
The models distinguish two outcomes. Sufficiently slow <radiative cooling> permits a fluctuating state in which dissipation of <turbulence> replaces the lost <heat>; faster cooling permits <gravitational fragmentation>. The reported transition depends on the local model and its assumptions. Its broader importance is the explicit link between an <energy> balance and whether a disk transports <angular momentum> or breaks into bound structures.<Nonlinear Outcome of Gravitational Instability in Cooling, Gaseous Disks by Charles F. Gammie>[Abstract: local razor-thin model, cooling–dissipation balance and the distinction between turbulence and fragmentation]{ref}
\Image[https://www.ias.edu/sites/default/files/styles/portrait/public/images/scholars/2189-1689993001.jpg.webp?itok=Pa7IImaW]
{title=Portrait of <Charles F. Gammie>}
{source=https://www.ias.edu/scholars/charles-gammie}
{width=240}