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DOE/SciDAC Supernova Science Center (SNSC)

Explore the cutting-edge research and simulations in nuclear astrophysics by the DOE/SciDAC Supernova Science Center led by S. Woosley, A. Burrows, C. Fryer, R. Hoffman, and 20 other researchers. Witness groundbreaking accomplishments, scientific results, and computational capabilities. Key focus areas include core-collapse supernovae, thermonuclear supernovae, gamma-ray bursts, X-ray bursts, and more. Collaborate in the Vertically Integrated Nuclear Astrophysics Collaboratory for stellar evolution, nucleosynthesis, supernova explosions, and light curves analysis. Discover the latest in 2D and 3D anelastic hydro and spectral methods, visualization tools, and major computing platforms. This center pushes the boundaries of nuclear astrophysics with world-class simulations and data archives.

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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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