Type Ia Supernovae and Cosmology Smoldering Subsonic convection

Type Ia Supernovae and Cosmology Smoldering • Subsonic convection in core of white dwarf • Anelastic module or limited study with compressible flash • Conductive heat transport M ~ 0. 3, ~ 0. 7 Lightcurve • Free expansion of envelope • Multi-group (non. LTE) radiation transport ~seconds ~1000 yr Ignition Flame • Initially compressible deflagration • DDT or expansion/recollapse • Flash (compressible module) with appropriate sub-grid model and fronttracking • Conductive heat The ASCI/Alliances Center for Astrophysical Thermonuclear Flashes The University of Chicago transport

Flash Capabilities for Type Ia Supernovae Advection-Diffusion Flame Model Numerous Nuclear Reaction Networks Monte Carlo 3 -D Radiation Transfer Compressible Hydrodynamics Adaptive Mesh Refinement (AMR) Numerous Equations of State Self-Gravity (multipole, multigrid) Cartesian, Cylindrical, and Spherical Geometries The ASCI/Alliances Center for Astrophysical Thermonuclear Flashes The University of Chicago

Computational Needs for Type Ia Supernova Simulations 1 Terabyte of memory 100 Gigabyte check point files 2. 5 Terabyte movie files 500 Teraflop hours per simulation x 20 simulations = 10 Petaflop hours The ASCI/Alliances Center for Astrophysical Thermonuclear Flashes The University of Chicago