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Global comparison of core-collapse supernova simulations in spherical symmetry

O'Connor, Evan and Bollig, Robert and Burrows, Adam and Couch, Sean and Fischer, Tobias and Janka, Hans-Thomas and Kotake, Kei and Lentz, Eric. J. and Liebendörfer, Matthias and Messer, O. E. Bronson and Mezzacappa, Anthony and Takiwaki, Tomoya and Vartanyan, David. (2018) Global comparison of core-collapse supernova simulations in spherical symmetry. Journal of Physics G: Nuclear and Particle Physics, 45 (10). p. 104001.

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Official URL: https://edoc.unibas.ch/69143/

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Abstract

We present a comparison between several simulation codes designed to study the core-collapse supernova mechanism. We pay close attention to controlling the initial conditions and input physics in order to ensure a meaningful and informative comparison. Our goal is three-fold. First, we aim to demonstrate the current level of agreement between various groups studying the core-collapse supernova central engine. Second, we desire to form a strong basis for future simulation codes and methods to compare to. Lastly, we want this work to be a stepping stone for future work exploring more complex simulations of core-collapse supernovae, i.e., simulations in multiple dimensions and simulations with modern neutrino and nuclear physics. We compare the early (first ~500 ms after core bounce) spherically-symmetric evolution of a 20 M ⊙ progenitor star from six different core-collapse supernovae codes: 3DnSNe-IDSA, AGILE-BOLTZTRAN, FLASH, Fornax, GR1D, and PROMETHEUS-VERTEX. Given the diversity of neutrino transport and hydrodynamic methods employed, we find excellent agreement in many critical quantities, including the shock radius evolution and the amount of neutrino heating. Our results provide an excellent starting point from which to extend this comparison to higher dimensions and compare the development of hydrodynamic instabilities that are crucial to the supernova explosion mechanism, such as turbulence and convection.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Astrophysik (Liebendörfer)
05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Liebendörfer, Matthias
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:IOP Publishing
ISSN:0954-3899
e-ISSN:1361-6471
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:16 Oct 2019 13:25
Deposited On:11 Oct 2019 12:41

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