SASI ACTIVITY IN THREE-DIMENSIONAL NEUTRINO-HYDRODYNAMICS SIMULATIONS OF SUPERNOVA CORES

The relevance of the standing accretion shock instability (SASI) compared to neutrino-driven convection in three-dimensional (3D) supernova-core environments is still highly controversial. Studying a 27M progenitor, we demonstrate, for the first time, that violent SASI activity can develop in 3D sim...

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Bibliographic Details
Published in:The Astrophysical journal 2013-06, Vol.770 (1), p.1-16
Main Authors: Hanke, Florian, Muller, Bernhard, WONGWATHANARAT, ANNOP, Marek, Andreas, Janka, Hans-Thomas
Format: Article
Language:English
Subjects:
Accretion
AMPLITUDES
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COMPARATIVE EVALUATIONS
CONVECTION
COSMIC NEUTRINOS
HYDRODYNAMICS
INSTABILITY
KINETIC ENERGY
LAYERS
Neutrinos
NEUTRON STARS
ONE-DIMENSIONAL CALCULATIONS
PERTURBATION THEORY
Progenitors (astrophysics)
SILICON OXIDES
SIMULATION
SPHERICAL HARMONICS
SUPERNOVAE
Three dimensional
THREE-DIMENSIONAL CALCULATIONS
Transport
Two dimensional
TWO-DIMENSIONAL CALCULATIONS
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Summary:The relevance of the standing accretion shock instability (SASI) compared to neutrino-driven convection in three-dimensional (3D) supernova-core environments is still highly controversial. Studying a 27M progenitor, we demonstrate, for the first time, that violent SASI activity can develop in 3D simulations with detailed neutrino transport despite the presence of convection. This result was obtained with the Prometheus-Vertex code with the same sophisticated neutrino treatment so far used only in one-dimensional and two-dimensional (2D) models. They confirm the importance of the SASI for another progenitor, its independence of the choice of spherical grid, and its preferred growth for fast accretion flows connected to small shock radii and compact proto-neutron stars as previously found in 2D setups.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/770/1/66