Core Collapse Supernovae: Postshock Convection in Two and Three Dimensions

Session 17 - Supernovae.
Display session, Monday, January 15
North Banquet Hall, Convention Center

[17.05] Core Collapse Supernovae: Postshock Convection in Two and Three Dimensions

A. C. Calder (Vanderbilt U., ORNL), A. Mezzacappa (U. Tennessee, ORNL), J. M. Blondin (North Carolina State U.), S. W. Bruenn (Florida Atlantic U.), M. W. Guidry, M. R. Strayer (U. Tennessee, ORNL), A. S. Umar (Vanderbilt U.)

We present two- and three-dimensional simulations of the onset and development of convection behind the stalled shock in a core collapse supernova. We begin with postbounce slices from realistic one-dimensional simulations that implement multigroup flux-limited diffusion. The multidimensional simulations include simple neutrino transport and neutrino heating and cooling of the postshock matter. They are the first in a series of simulations that will implement more sophisticated neutrino transport schemes. The hydrodynamics is evolved using an extended version of the piecewise parabolic method code VH-1, and the running boundary conditions for the two- and three-dimensional simulations are specified using our one-dimensional results. In particular, realistic time-dependent neutrino luminosity boundary conditions are used. We investigate any dimensional dependence exhibited by postshock convection. We also investigate its effect on the shock dynamics and supernova outcome.

Program listing for Monday