Theoretical study on explosive stellar phenomena via multi-messenger observation
| Project/Area Number |
26707013
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Fukuoka University |
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Principal Investigator |
Kotake Kei 福岡大学, 理学部, 准教授 (20435506)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
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| Keywords | 超新星爆発 / ニュートリノ / 重力波 / スーパーコンピューティング / ニュートリノ輻射輸送 / 多次元流体シミュレーション / 核密度状態方程式 / 中性子星 / 超新星 / 電磁波放射 / 一般相対論 / 高密度状態方程式 / 数値シミュレーション / スーパーコンピュータ / マルチメッセンジャー / 輻射流体力学 / 数値流体力学 / 状態方程式 |
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| Outline of Final Research Achievements |
By performing the first ever systematic multi-dimensional neutrino-radiation hydrodynamics of core-collapse supernovae, we have shown that core-compactness of the progenitors is the key to diagnose the explodability of massive stars. Assuming axisymmetry of the star, our self-consistent simulations succeeded in following the long-term postbounce dynamics, about 7 s after the onset of explosion. By making a detailed analysis of the multi-messenger observables, we pointed out that Super-Kamiokande plays an essential role, for a Galactic event, in determining the epoch of core-bounce. The time-stamp of core bounce is indispensable for detecting the subsequent gravitational-wave signals that are produced by neutrino-driven convection and the shock instability in the non-linear phase. Regarding optical observation, we have done an observational drill where we have made a detailed plan for multi-wavelength observation not to miss the once-in-a-lifetime supernova event in our Milky way.
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Report
(4 results)
Research Products
(33 results)
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[Journal Article] Multimessenger signals of long-term core-collapse supernova simulations: synergetic observation strategies2016
Author(s)
Nakamura, K., Horiuchi, S., Tanaka, M., Hayama, K., Takiwaki, T., & Kotake, K
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 461
Pages: 3296-3313
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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