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Comparing Treatments of Weak Reactions with Nuclei in Simulations of Core-collapse Supernovae

Nagakura, Hiroki and Furusawa, Shun and Togashi, Hajime and Richers, Sherwood and Sumiyoshi, Kohsuke and Yamada, Shoichi (2019) Comparing Treatments of Weak Reactions with Nuclei in Simulations of Core-collapse Supernovae. Astrophysical Journal Supplement Series, 240 (2). Art. No. 38. ISSN 1538-4365. https://resolver.caltech.edu/CaltechAUTHORS:20190213-153547839

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Abstract

We perform an extensive study of the influence of nuclear weak interactions on core-collapse supernovae, paying particular attention to consistency between nuclear abundances in the equation of state (EOS) and nuclear weak interactions. We compute properties of uniform matter based on the variational method. For inhomogeneous nuclear matter, we take a full ensemble of nuclei into account with various finite-density and thermal effects and directly use the nuclear abundances to compute nuclear weak interaction rates. To quantify the impact of a consistent treatment of nuclear abundances on CCSN dynamics, we carry out spherically symmetric CCSN simulations with full Boltzmann neutrino transport, systematically changing the treatment of weak interactions, EOSs, and progenitor models. We find that the inconsistent treatment of nuclear abundances between the EOS and weak interaction rates weakens the EOS dependence of both the dynamics and neutrino signals. We also test the validity of two artificial prescriptions for weak interactions of light nuclei and find that both prescriptions affect the dynamics. Furthermore, there are differences in neutrino luminosities by ~10% and in average neutrino energies by 0.25–1 MeV from those of the fiducial model. We also find that the neutronization burst neutrino signal depends on the progenitor more strongly than on the EOS, preventing a detection of this signal from constraining the EOS.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4365/aafac9DOIArticle
https://arxiv.org/abs/1812.09811arXivDiscussion Paper
ORCID:
AuthorORCID
Nagakura, Hiroki0000-0002-7205-6367
Richers, Sherwood0000-0001-5031-6829
Sumiyoshi, Kohsuke0000-0002-9224-9449
Yamada, Shoichi0000-0002-2166-5605
Additional Information:© 2019 The American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2018 August 4; revised 2018 December 12; accepted 2018 December 21; published 2019 February 13. We acknowledge Adam Burrows, Christian D. Ott, Andre da Silva Schneider, Tomoya Takiwaki, and Satoshi X. Nakamura for fruitful discussions. The numerical computations were performed on the supercomputers at K, at AICS, FX10 at Information Technology Center of Tokyo University. We also acknowledge Cray XC40 at YITP of Kyoto University and SR16000 at KEK under the support of its Large Scale Simulation Program (16/17-11), Research Center for Nuclear Physics (RCNP) at Osaka University and the PC cluster at the Center for Computational Astrophysics, National Astronomical Observatory of Japan for code development and checks. Large-scale storage of numerical data is supported by JLDG constructed over SINET4 of NII. H.N. was supported in part by JSPS Postdoctoral Fellowships for Research Abroad No. 27-348, Caltech through NSF award No. TCAN AST-1333520, and Princeton University through DOE SciDAC4 Grant DE-SC0018297 (subaward 00009650). S.R. was supported by the N3AS Fellowship through the National Science Foundation, grant PHY-1630782, and the Heising-Simons Foundation, grant 2017-228. This work was also supported by Grant-in-Aid for the Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan (15K05093, 24103006, 24740165, 24244036, 25870099, 26104006, 16H03986, 17H06357, 17H06365), HPCI Strategic Program of Japanese MEXT and K computer at the RIKEN (Project ID: hpci 160071, 160211, 170230, 170031, 170304, hp180179, hp180111) and the RIKEN iTHEMS Project.
Group:TAPIR, Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)27-348
NSFAST-1333520
Princeton UniversityUNSPECIFIED
Department of Energy (DOE)DE-SC0018297
NSFPHY-1630782
Heising-Simons Foundation2017-228
Ministry of Education, Culture, Sports, Science and Technology (MEXT)15K05093
Ministry of Education, Culture, Sports, Science and Technology (MEXT)24103006
Ministry of Education, Culture, Sports, Science and Technology (MEXT)24740165
Ministry of Education, Culture, Sports, Science and Technology (MEXT)24244036
Ministry of Education, Culture, Sports, Science and Technology (MEXT)25870099
Ministry of Education, Culture, Sports, Science and Technology (MEXT)26104006
Ministry of Education, Culture, Sports, Science and Technology (MEXT)16H03986
Ministry of Education, Culture, Sports, Science and Technology (MEXT)17H06357
Ministry of Education, Culture, Sports, Science and Technology (MEXT)17H06365
Subject Keywords:hydrodynamics – neutrinos – supernovae: general
Issue or Number:2
Record Number:CaltechAUTHORS:20190213-153547839
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190213-153547839
Official Citation:Hiroki Nagakura et al 2019 ApJS 240 38
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92905
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Feb 2019 17:42
Last Modified:03 Oct 2019 20:49

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