GENERAL-RELATIVISTIC THREE-DIMENSIONAL MULTI-GROUP NEUTRINO RADIATION-HYDRODYNAMICS SIMULATIONS OF CORE-COLLAPSE SUPERNOVAE

ABSTRACT We report on a set of long-term general-relativistic three-dimensional (3D) multi-group (energy-dependent) neutrino radiation-hydrodynamics simulations of core-collapse supernovae. We employ a full 3D two-moment scheme with the local M1 closure, three neutrino species, and 12 energy groups...

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Bibliographic Details
Published in:The Astrophysical journal 2016-11, Vol.831 (1), p.98
Main Authors: Roberts, Luke F., Ott, Christian D., Haas, Roland, O'Connor, Evan P., Diener, Peter, Schnetter, Erik
Format: Article
Language:English
Subjects:
Astrophysics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
ASYMMETRY
Biological evolution
Collapse
COMPUTERIZED SIMULATION
ENERGY DEPENDENCE
EXPANSION
EXPLOSIONS
Fluid dynamics
Fluid flow
Fluid mechanics
Group theory
HYDRODYNAMICS
instabilities
INSTABILITY
NEUTRINOS
Radiation
Relativism
Relativistic effects
RELATIVISTIC RANGE
RESOLUTION
Simulation
SUPERNOVAE
supernovae: general
SYMMETRY
THREE-DIMENSIONAL CALCULATIONS
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Summary:ABSTRACT We report on a set of long-term general-relativistic three-dimensional (3D) multi-group (energy-dependent) neutrino radiation-hydrodynamics simulations of core-collapse supernovae. We employ a full 3D two-moment scheme with the local M1 closure, three neutrino species, and 12 energy groups per species. With this, we follow the post-core-bounce evolution of the core of a nonrotating progenitor in full unconstrained 3D and in octant symmetry for 380 ms. We find the development of an asymmetric runaway explosion in our unconstrained simulation. We test the resolution dependence of our results and, in agreement with previous work, find that low resolution artificially aids explosion and leads to an earlier runaway expansion of the shock. At low resolution, the octant and full 3D dynamics are qualitatively very similar, but at high resolution, only the full 3D simulation exhibits the onset of explosion.
ISSN:0004-637X
1538-4357
DOI:10.3847/0004-637X/831/1/98