Study on Core-Collapse Supernovae with Multi-Dimensional, General Relativistic, Radiation-Hydrodynamical Simulations
| Project/Area Number |
16H03986
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2018: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Keywords | 重力理論 / ダークエネルギー / 宇宙論 / インフレーション / 素粒子統一理論 / 超新星 / 重力崩壊 / ニュートリノ輸送 / 一般相対論 / 重力崩壊崩壊 |
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| Outline of Final Research Achievements |
In this study, we aimed to perform first-principles simulations of gravitational collapse of massive star cores in multi-dimensions. It is a process to produce supernova explosions and is accompanied by the formation of compact stars such as neutron stars and black holes. We developed a numerical code that does not employ any artificial approximation unlike other codes and that is fully general relativistic. We applied the code to the simulation of core-collapse supernovae under axisymmetry and found an explosion in one of the models. This is the first-ever success in multi-dimensional simulations at this level of sophistication in neutrino transfer. We also studied the influences of rotations on the dynamics. In these simulations, gravity was still Newtonian. We hence developed a code to solve the Einstein equations numerically. One of nice features of this code is that it employs spherical coordinates unlikes others. We fully tested this code and found that it works well indeed.
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| Academic Significance and Societal Importance of the Research Achievements |
ブラックホールの合体から放出された重力波の直接検出や巨大ブラックホールの影の電波観測などが近年立て続けに発表され、専門家非専門家を問わずブラックホールに関する興味が高まっている。本研究は、中でも重力波がその存在を明らかにした数10太陽質量のブラックホールがどのような親星からどのようにして形成されたかを明らかにすることを目指して行っているものであり、その社会的、学術的意義は極めて高いと言える。
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Report
(4 results)
Research Products
(49 results)
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[Journal Article] Construction of KAGRA : an underground gravitational-wave observatory2018
Author(s)
M Ando, Y Aso, R Flaminio, T Kajita, S Kawamura, N Kimura, K Kuroda, F Matsushima, N Mio, O Miyakawa, S Miyoki, Y Moriwaki, M Ohashi, K Somiya, T Suzuki, T Tomaru, T Uchiyama and KAGRA Collaboration, et al.
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Journal Title
Progress of Theoretical Physics and Experiments
Volume: 2018
Pages: 01-18
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] The Neutrino Distributions in the Rotating Core-Collapse Superanova2018
Author(s)
Harada, A., Yamada, S., Iwakami, W., Okawa, H., Nagakura, H., Sumiyoshi, K., Furusawa, S., Matsufuru, H.
Organizer
Physics of Core-Collapse Supernovae and Compact Star Formations
Related Report
Int'l Joint Research
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[Presentation] The Rotating Core-Collapse Supernova Simulation with Full Boltzmann Neutrino Transport2017
Author(s)
Harada, A., Iwakami, W., Okawa, H., Yamada, S., Nagakura, H., Sumiyoshi, K., Matsufuru, H., Imakura, A.
Organizer
Workshop on the Progenitor-Supernova-Remnant Connection
Related Report
Int'l Joint Research
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