68 | 69 | BE sphere in an ambient rho= rho(Rbe). This is the same setup as above, except now there is no 10% rho enhancement and the ambient has same density as BE sphere at r=Rbe. http://www.pas.rochester.edu/~erica/MatchedJuly26.gif Here collapse seems to be proceeding in a very different manner. At small times, material begins to pile up at the sphere's outer edge. After enough material has accumulated, the pressure at the sphere's outer edge exceeds critical values and moves inward with time in a compression wave. The collapse is supersonic most of the way through. Note, radial velocity is now the actual quantity, to show clearly the sign (<0 is moving inward, >0 is moving outward). |