Oppenheimer-Snyder cloud (source code)

= Oppenheimer-Snyder cloud
{c}

The comoving dust ball $0\le\chi\le\chi_0<\pi/2$ in the <Oppenheimer-Snyder model> is an Oppenheimer-Snyder cloud. Its <pressureless matter> has uniform <density> on each constant-<proper time> slice and reaches a simultaneous final singularity in the ideal homogeneous model.