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MATTER MIXING IN CORE-COLLAPSE SUPERNOVA EJECTA: LARGE DENSITY PERTURBATIONS IN THE PROGENITOR STAR?
Mao JR(毛基荣)1,2,5,6; Ono, Masaomi2; Nagataki, Shigehiro1; Hashimoto, Masa-aki2; Ito, Hirotaka1; Matsumoto, Jin1; Dainotti, Maria G.1,3; Lee, Shiu-Hang1,4
Source PublicationASTROPHYSICAL JOURNAL
2015-08-01
Volume808Issue:2
DOI10.1088/0004-637X/808/2/164
Contribution Rank第5完成单位
Indexed BySCI
Keywordhydrodynamics instabilities nuclear reactions, nucleosynthesis, abundances shock waves supernovae: general
Abstract

Matter mixing is one important topic in the study of core-collapse supernova (CCSN) explosions. In this paper, we perform two-dimensional hydrodynamic simulations to reproduce the high velocity Ni-56 clumps observed in SN 1987A. This is the first time that large density perturbation is proposed in the CCSN progenitor to generate Rayleigh-Taylor (RT) instability and make the effective matter mixing. In the case of a spherical explosion, RT instability is efficient at both C+O/He and He/H interfaces of the SN progenitor. Radial coherent structures shown in perturbation patterns are important for obtaining high velocity Ni-56 clumps. We can also obtain matter mixing features and high velocity Ni-56 clumps in some cases of aspherical explosion. We find that one of the most favorable models in our work has a combination of bipolar and equatorially asymmetric explosions in which at least 25% of density perturbation is introduced at different composition interfaces of the CCSN progenitor. These simulation results are comparable to the observational findings of SN 1987A.

Funding ProjectChinese Academy of Sciences ; Ministry of Education, Culture, Sports, Science and Technology (MEXT)[23105709] ; Ministry of Education, Culture, Sports, Science and Technology (MEXT)[26105521] ; Japan Society for the Promotion of Science (JSPS)[19104006] ; Japan Society for the Promotion of Science (JSPS)[23340069] ; Japan Society for the Promotion of Science (JSPS)[2503786] ; Japan Society for the Promotion of Science (JSPS)[25610056] ; Japan Society for the Promotion of Science (JSPS)[26287056] ; Japan Society for the Promotion of Science (JSPS)[26800159] ; Japan Society for the Promotion of Science (JSPS)[26800141] ; Japan Society for the Promotion of Science (JSPS)[24.02022]
Funding OrganizationChinese Academy of Sciences ; Ministry of Education, Culture, Sports, Science and Technology (MEXT)[23105709, 26105521] ; Japan Society for the Promotion of Science (JSPS)[19104006, 23340069, 2503786, 25610056, 26287056, 26800159, 26800141, 24.02022]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000371002400059
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordNEUTRINO-HYDRODYNAMICS SIMULATIONS ; GENERAL-RELATIVISTIC SIMULATIONS ; RAYLEIGH-TAYLOR INSTABILITY ; TURBULENT CONVECTION MODEL ; LARGE-MAGELLANIC-CLOUD ; X-RAY-EMISSION ; SN 1987A ; LIGHT-CURVE ; 3-DIMENSIONAL SIMULATIONS ; MASSIVE STARS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9344
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorMao JR(毛基荣)
Affiliation1.Astrophysical Big Bang Lab, RIKEN, Wako, Saitama 351-0198, Japan
2.Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
3.Astronomical Observatory, Jagiellonian University, ul. Orla 171, Krakow 31-501, Poland
4.Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Kanagawa 252-5210, Japan
5.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province, 650011, China
6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China
Recommended Citation
GB/T 7714
Mao JR,Ono, Masaomi,Nagataki, Shigehiro,et al. MATTER MIXING IN CORE-COLLAPSE SUPERNOVA EJECTA: LARGE DENSITY PERTURBATIONS IN THE PROGENITOR STAR?[J]. ASTROPHYSICAL JOURNAL,2015,808(2).
APA Mao JR.,Ono, Masaomi.,Nagataki, Shigehiro.,Hashimoto, Masa-aki.,Ito, Hirotaka.,...&Lee, Shiu-Hang.(2015).MATTER MIXING IN CORE-COLLAPSE SUPERNOVA EJECTA: LARGE DENSITY PERTURBATIONS IN THE PROGENITOR STAR?.ASTROPHYSICAL JOURNAL,808(2).
MLA Mao JR,et al."MATTER MIXING IN CORE-COLLAPSE SUPERNOVA EJECTA: LARGE DENSITY PERTURBATIONS IN THE PROGENITOR STAR?".ASTROPHYSICAL JOURNAL 808.2(2015).
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