Simulation of Rayleigh-Taylor Instability in a Supernova Envelope with the Adaptive Mesh Refinement Scheme

We simulated the growth of a Rayleigh-Taylor (RT) instability in an expanding supernova envelope with the Adaptive Mesh Refinement (AMR) Scheme. We put 5% perturbation in the radial velocity inside the shock front when the shock wave reached the He-H boundary and performed a parameter search for various perturbations. We found that the maximum velocity is achieved at wavenumber m = 20 for a sinusoidal perturbation. We succeeded in reproducing the observed velocities by the congregated model that non--radial velocity components are also included.