Radiation-supported vertical disk
= Radiation-supported vertical disk
A <radiation-supported vertical disk> has vertical <hydrostatic equilibrium> supplied mainly by <radiation pressure>. In a constant-<opacity>, optically thick layer in gravity $-\Omega^2z$, <radiative diffusion> gives $F=c\Omega^2z/\kappa$. This statement applies at a fixed radius and does not resolve the optically thin surface.