The interaction of the supernova blastwave with the circumstellar
shell described in our model is expected to be dynamically unstable.
We are running 2D hydrodynamic simulations to investigate the effects
of this unstable interaction. The image at left depicts the initial
conditions, with the self-similar blastwave about to impinge on the
circumstellar shell.
In this first simulation we began with a uniform density shell.
The inner surface is roughened in order to seed the
Richtmeyer-Meshkov instability expected when the forward shock
impacts the density discontinuity of the inside edge of the shell.
(1.3 Mb MPEG) -->