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Three-dimensional Boltzmann-Hydro code for core-collapse in massive stars II. The Implementation of moving-mesh for neutron star kicks

Nagakura, Hiroki and Iwakami, Wakana and Furusawa, Shun and Sumiyoshi, Kohsuke and Yamada, Shoichi and Matsufuru, Hideo and Imakura, Akira (2017) Three-dimensional Boltzmann-Hydro code for core-collapse in massive stars II. The Implementation of moving-mesh for neutron star kicks. Astrophysical Journal Supplement Series, 229 (2). Art. No. 42. ISSN 0067-0049. http://resolver.caltech.edu/CaltechAUTHORS:20161017-150853718

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Abstract

We present a newly developed moving-mesh technique for the multi-dimensional Boltzmann-Hydro code for the simulation of core-collapse supernovae (CCSNe). What makes this technique different from others is the fact that it treats not only hydrodynamics but also neutrino transfer in the language of the 3 + 1 formalism of general relativity (GR), making use of the shift vector to specify the time evolution of the coordinate system. This means that the transport part of our code is essentially general relativistic, although in this paper it is applied only to the moving curvilinear coordinates in the flat Minknowski spacetime, since the gravity part is still Newtonian. The numerical aspect of the implementation is also described in detail. Employing the axisymmetric two-dimensional version of the code, we conduct two test computations: oscillations and runaways of proto-neutron star (PNS). We show that our new method works fine, tracking the motions of PNS correctly. We believe that this is a major advancement toward the realistic simulation of CCSNe.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4365/aa69eaDOIArticle
http://iopscience.iop.org/article/10.3847/1538-4365/aa69ea/metaPublisherArticle
https://arxiv.org/abs/1605.00666arXivDiscussion Paper
ORCID:
AuthorORCID
Nagakura, Hiroki0000-0002-7205-6367
Sumiyoshi, Kohsuke0000-0002-9224-9449
Yamada, Shoichi0000-0002-2166-5605
Additional Information:© 2017 American Astronomical Society. Received 2015 December 24. Accepted 2016 May 1. Published 2017 April 21. We are grateful to A. Juodagalvis for providing the data of electron capture rates on heavy nuclei. H.N. acknowledges to M. Shibata, Y. Sekiguchi and H. Okawa for valuable comments and discussions. H.N. also thanks Werner Marcus for proofreadings. The numerical computations were performed on the supercomputers at K, at AICS, FX10 at Information Technology Center of Tokyo University, SR16000 at YITP of Kyoto University, and SR16000 at KEK under the support of its Large Scale Simulation Program (14/15-17, 15/16-08), Research Center for Nuclear Physics (RCNP) at Osaka University. 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. 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) and HPCI Strategic Program of Japanese MEXT and K computer at the RIKEN (Project ID: hpci 130025, 140211, and 150225).
Group:TAPIR, Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
High Energy Accelerator Research Organization (KEK)14/15-17
High Energy Accelerator Research Organization (KEK)15/16-08
Osaka UniversityUNSPECIFIED
Japan Society for the Promotion of Science (JSPS)27-348
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
RIKEN130025
RIKEN140211
RIKEN150225
Subject Keywords:methods: numerical – neutrinos – radiative transfer – relativistic processes – (stars:) supernovae: general
Record Number:CaltechAUTHORS:20161017-150853718
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161017-150853718
Official Citation:Hiroki Nagakura et al 2017 ApJS 229 42
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71190
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:17 Oct 2016 22:40
Last Modified:11 Oct 2017 21:44

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