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DOE/SciDAC Supernova Science Center (SNSC)

DOE/SciDAC Supernova Science Center (SNSC). S. Woosley (UCSC), A. Burrows (UA), C. Fryer (LANL), R. Hoffman (LLNL)+ 20 researchers. Outline. Institutions and Core Projects Codes, Simulation Capabilities, ISICS, Platforms, Visualization List of Major Accomplishments to date

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DOE/SciDAC Supernova Science Center (SNSC)

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  1. DOE/SciDAC Supernova Science Center (SNSC) S. Woosley (UCSC), A. Burrows (UA), C. Fryer (LANL), R. Hoffman (LLNL)+ 20 researchers

  2. Outline • Institutions and Core Projects • Codes, Simulation Capabilities, ISICS, Platforms, Visualization • List of Major Accomplishments to date • Representative Scientific Results (graphics and animations)

  3. CodesandCapabilities • 2D/3D Anelastic hydro; spectral methods (+MHD) (Glatzmaier) • VULCAN/2D Boltzmann/hydro (6D) (TOPS) • Implicit Stellar Evolution (Kepler) • 2D/3D Stellar Evolution • 3D Hydro/diffusion (statistical methods) • 2D/3D Thermonuclear combusion (APDEC) • FLASH 2D/3D Hydro code • 3D Monte Carlo radiation transport • 3D Special relativistic hydro (GRBs) • Nuclear Network solver(s) • Visualization infrastructure at Arizona (Hariri)

  4. MainComputersandPlatforms • NERSC/seaborg • ORNL/cheetah, eagle • Beowulfs at LANL, UCSC, U.Arizona • ASCI Q (LANL)

  5. Computational Nuclear Astrophysics • Core-Collapse Supernovae (Grid-based & Statistical methods) • Thermonuclear Supernovae (Type Ia) • Gamma-Ray Bursts • X-ray Bursts • Stellar Convection simulations (2D/3D) • World-class Nuclear Data Archive • 1-,2-,3-D Radiation/Hydrodynamics • Astrophysical Flame Physics • Collaboratory- Vertically Integrated Nuclear Astrophysics: Stellar Evolution - Nucleosynthesis - Supernova Explosions - Light Curves

  6. MajorAccomplishments • First 3D Simulation of Core-Collapse Supernova (Diffusion) • First 2D Boltzmann Rad/Hydro Simulation in Core Collapse: Multi-group, multi-angle • First 3D Relativistic GRB Jet Calculation • First Fully-Resolved 3D Rayleigh-Taylor Nuclear Burning Study in Type Ia Supernova Context and 3D Simulation of Onset of Ignition • First 1600-Species Nuclear Network Calculation for X-Ray Bursts • Assembly of the World’s Most Comprehensive Nuclear Reaction Database • 3D Stellar Convection simulations: sun, massive stars

  7. Hoffman (LLNL): Nuclear Reaction Database

  8. Glatzmaier, 3D Anelastic MHD : Pulsar B-Fields?

  9. Tami Rogers UCSC Penetrative Convection

  10. SolarConvectionSimulations: AnelasticCodewithB-fields

  11. T8 = 7 3D Nuclear Burning Kuhlen et al. UCSC

  12. TypeIaSupernovaFusionFlame g Fuel Nuclear fusion flame subject to both burning and the Rayleigh-Taylor instability. r = 1.5 x 107 g cm-3 Carbonmassfraction. Redis50%. Blueiszero Ash Bell, Day, Rendleman, Woosley, and Zingale, ApJ (2004) In collaboration with CCSE/LBL Group

  13. Onion Skin Structure: The Mote in the Eye of the Storm

  14. Fryer and Warren (LANL): First 3D Simulation

  15. Rayleigh-Taylor Mixing in a Type II Supernova

  16. Fryer, Warren, and Hungerford 2004: Radioactive Nickel

  17. University of Arizona

  18. 11SolarMasses ModestRotation

  19. 11 Solar Masses Rapid Rotation

  20. 20 Solar Masses Modest Rotation Torus Formation

  21. PerturbationStudy

  22. VULCAN/2D Multi-Group, Multi-Angle, Time-dependent Boltzmann/Hydro (6D) • Arbitrary Eulerian-Lagrangian (ALE); remapping • 6 - dimensional (1(time) + 2(space) + 2(angles) + 1(energy-group)) • Moving Mesh (FE) • 2D multi-group, multi-angle, Sn (~150 angles), implicit transport • Axially-symmetric; Rotation • Flux-conservative; smooth matching to diffusion limit • Developing TOPS collaboration: solvers, pre-conditioners for transport (PETSc/Hypre) (needs speed) • First 2D Boltzmann rad/hydro code in astrophysics

  23. VULCAN/2D Numerical Paradigm

  24. Color Map: Ye Vectors: Flux Multi-Group Multi-Angle Boltzmann Transport Livne, Burrows, et al. 2004, Ap.J. in press

  25. 2D MGFLD: Core Collapse and Bounce; Entropy and Velocity Vectors

  26. 2D MGFLD: Entropy and Neutrino Flux (7.8 MeV)

  27. SN1987A ?

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