Neutrino-Driven Supernovae: an Accretion Instability in a Nuclear Physics Controlled Environment

Abstract

New simulations demonstrate that low-mode, nonradial hydrodynamic instabilities of the accretion shock help starting hot-bubble convection in supernovae and thus support explosions by the neutrino-heating mechanism. The prevailing conditions depend on the high-density equation of state which governs stellar core collapse, core bounce, and neutron star formation. Tests of this sensitivity to nuclear physics variations are shown for spherically symmetric models. Implications of current explosion models for r-process nucleosynthesis are addressed.

9 pages, 4 figures, contribution to Nuclei in the Cosmos 8, to appear in Nucl. Phys. A

References in corpus (25)

• Relativistic Equation of State of Nuclear Matter for Supernova and Neutron Star
• Stability of Standing Accretion Shocks, With an Eye Toward Core Collapse Supernovae
• Nucleosynthesis in neutrino-driven winds: I. The physical conditions
• On the Nature of Core Collapse Supernova Explosions
• Inside the Supernova: A Powerful Convective Engine
• Mass Limits For Black Hole Formation
• Radiation hydrodynamics with neutrinos: Variable Eddington factor method for core-collapse supernova simulations
• Shock Breakout in Core-Collapse Supernovae and its Neutrino Signature
• Probing the gravitational well: No supernova explosion in spherical symmetry with general relativistic Boltzmann neutrino transport
• The Physics of Protoneutron Star Winds: Implications for r-Process Nucleosynthesis
• Improved Models of Stellar Core Collapse and Still no Explosions: What is Missing?
• Spherically Symmetric Simulation with Boltzmann Neutrino Transport of Core Collapse and Post-Bounce Evolution of a 15 Solar Mass Star
• Electron capture rates on nuclei and implications for stellar core collapse
• Core-Collapse Simulations of Rotating Stars
• Pulsar Recoil by Large-Scale Anisotropies in Supernova Explosions
• The consequences of nuclear electron capture in core collapse supernovae
• What Can the Accretion Induced Collapse of White Dwarfs Really Explain?
• The r-Process in Neutrino-Driven Winds from Nascent, "Compact" Neutron Stars of Core-Collapse Supernovae
• Towards Gravitational Wave Signals from Realistic Core Collapse Supernova Models
• Modeling Core-Collapse Supernovae in 3-Dimensions
• Investigation of Neutrino-Driven Convection and the Core Collapse Supernova Mechanism Using Multigroup Neutrino Transport
• The r-process in supernova explosions from the collapse of O-Ne-Mg cores
• R-Process in Collapsing O/Ne/Mg Cores
• Non-radial instabilities of isothermal Bondi accretion with a shock: vortical-acoustic cycle vs post-shock acceleration
• r-Process in Prompt Supernova Explosions Revisited

Cited by in corpus (21)

• Explosion Mechanisms of Core-Collapse Supernovae
• Protoneutron star evolution and the neutrino driven wind in general relativistic neutrino radiation hydrodynamics simulations
• A New Mechanism for Core-Collapse Supernova Explosions
• The Physics of Core-Collapse Supernovae
• Two-Dimensional Hydrodynamic Core-Collapse Supernova Simulations with Spectral Neutrino Transport II. Models for Different Progenitor Stars
• Pulsar spins from an instability in the accretion shock of supernovae
• Composition of the Innermost Core Collapse Supernova Ejecta
• The neutrino signal from protoneutron star accretion and black hole formation
• Equation-of-State Dependent Features in Shock-Oscillation Modulated Neutrino and Gravitational-Wave Signals from Supernovae
• Features of the Acoustic Mechanism of Core-Collapse Supernova Explosions
• r-Process Calculations and Galactic Chemical Evolution
• The Physics of the Neutrino Mechanism of Core-Collapse Supernovae
• Late-Time Convection in the Collapse of a 23 Solar Mass Star
• The Core-Collapse Supernova with "Non-Uniform" Magnetic Fields
• A New Algorithm for 2-D Transport for Astrophysical Simulations: I. General Formulation and Tests for the 1-D Spherical Case
• Stability of the Accretion Flows with Stalled Shocks in Core-Collapse Supernovae
• The equation of state and composition of hot, dense matter in core-collapse supernovae
• Enrichment of Very Metal-Poor Stars with Both r-Process and s-Process Elements from 8-10 M_\odot Stars
• Inelastic Neutrino-Helium Scatterings and Standing Accretion Shock Instability in Core-Collapse Supernovae
• Nuclear Input for Core-collapse Models
• Nuclear physics with spherically symmetric supernova models