Core-collapse supernovae in the hall of mirrors
Core-collapse supernovae in the hall of mirrors
复制标题
镜厅中的核心塌缩超新星
DOI:
10.1051/0004-6361/201833705
复制
发表时间:
2018
影响因子:
6.5
通讯作者:
Thielemann Friedrich-Karl
中科院分区:
文献类型:
--
作者:
Cabezn Rubn M. ;Pan Kuo-Chuan ;Liebendrfer Matthias ;Kuroda Takami ;Ebinger Kevin ;Heinimann Oliver ;Perego Albino ;Thielemann Friedrich-Karl
ContextModeling core-collapse supernovae (SNe) with neutrino transport in three dimensions (3D) requires tremendous computing resources and some level of approximation. We present a first comparison study of core-collapse SNe in 3D with different physics approximations and hydrodynamics codes.AimsThe objective of this work is to assess the impact of the hydrodynamics code, approximations for the neutrino, gravity treatments, and rotation on the simulation of core-collapse SNe in 3D.MethodsWe use four different hydrodynamics codes in this work (ELEPHANT, FLASH, fGR1, and SPHYNX) in combination with two different neutrino treatments, the isotropic diffusion source approximation (IDSA) and two-moment M1, and three different gravity treatments (Newtonian, 1D General Relativity correction, and full General Relativity). Additional parameters discussed in this study are the inclusion of neutrino-electron scattering via a parametrized deleptonization and the influence of rotation.ResultsThe four codes compared in this work include Eulerian and fully Lagrangian (smoothed particle hydrodynamics) codes for the first time. They show agreement in the overall evolution of the collapse phase and early post-bounce within the range of 10% (20% in some cases). The comparison of the different neutrino treatments highlights the need to further investigate the antineutrino luminosities in IDSA, which tend to be relatively high. We also demonstrate the requirement for a more detailed heavy-lepton neutrino leakage. When comparing with a full General Relativity code, including an M1 transport method, we confirm the influence of neutrino-electron scattering during the collapse phase, which is adequately captured by the parametrized deleptonization scheme. Also, the effective general relativistic potential reproduces the overall dynamic evolution correctly in all Newtonian codes. Additionally, we verify that rotation aids the shock expansion and estimate the overall angular momentum losses for each code in rotating scenarios.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
M. Liebendörfer
通讯作者:
M. Liebendörfer
影响因子:
2.9
作者:
A Dubey;L. Reid;R. Fisher
通讯作者:
R. Fisher
DOI:
10.1088/2041-8205/778/1/l7
发表时间:
2013-09
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
S. Couch;C. Ott
通讯作者:
S. Couch;C. Ott
DOI:
10.3847/0004-637x/825/1/6
发表时间:
2015-11
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Summa;Florian Hanke;H. Janka;T. Melson;A. Marek;B. Müller
通讯作者:
A. Summa;Florian Hanke;H. Janka;T. Melson;A. Marek;B. Müller
DOI:
10.1016/0370-1573(88)90038-5
发表时间:
1988
期刊:
Physics Reports
影响因子:
--
作者:
J. Cooperstein
通讯作者:
J. Cooperstein