From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae

Details From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae

2011-11-12

arxiv.org/abs/1111.2959v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

5 pages. To appear in the Proceedings of SciDAC 2011, from the SciDAC 2011 meeting, July 2011, Denver, CO

Scientific paper

We present our end-to-end capability for computing the convective phase through the explosion phase of Type Ia supernovae. We compute the convective phase up to the time of ignition using our low Mach number code, MAESTRO, and the subsequent explosion phase using our compressible code, CASTRO. Both codes share the same BoxLib software framework and use finite-volume, block-structured adaptive mesh refinement (AMR) to enable high-resolution, three-dimensional full-star simulations that scale to 100,000+ cores. We present preliminary results from the first-ever simulations of convection preceding ignition using MAESTRO with AMR. We also demonstrate our ability to initialize a compressible simulation of the explosion phase in CASTRO using data obtained directly from MAESTRO just before ignition. Some care must be taken during this initialization procedure when interpreting the size and distribution of hot spots.

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