MATTER MIXING IN CORE-COLLAPSE SUPERNOVA EJECTA: LARGE DENSITY PERTURBATIONS IN THE PROGENITOR STAR?
文献类型：期刊论文
| 作者 | 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
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-08-01 |
| 卷号 | 808期号:2 |
| 关键词 | hydrodynamics instabilities nuclear reactions, nucleosynthesis, abundances shock waves supernovae: general |
| ISSN号 | 0004-637X |
| 产权排序 | 第五完成单位 |
| 通讯作者 | Mao, JR (reprint author), RIKEN, Astrophys Big Bang Lab, 2-1 Hirosawa, Wako, Saitama 3510198, Japan |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | NEUTRINO-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 |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/808/2/164/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000371002400059 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9344]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：云南天文台
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