Unveiling Emission Mechanism of Gamma-Ray Bursts from the Central Engine
| Project/Area Number |
26287056
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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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 | Institute of Physical and Chemical Research |
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Principal Investigator |
Nagataki Shigehiro 国立研究開発法人理化学研究所, 長瀧天体ビッグバン研究室, 准主任研究員 (60359643)
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| Co-Investigator(Kenkyū-buntansha) |
水田 晃 国立研究開発法人理化学研究所, 戎崎計算宇宙物理研究室, 研究員 (90402817)
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| Co-Investigator(Renkei-kenkyūsha) |
ITO Hirotaka 国立研究開発法人理化学研究所, 長瀧天体ビッグバン研究室, 特別研究員 (30434278)
MATSUMOTO Jin 国立研究開発法人理化学研究所, 長瀧天体ビッグバン研究室, 基礎科学特別研究員 (70722247)
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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 |
¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | ガンマ線バースト / ブラックホール / 輻射輸送 / 超新星 / 相対論的ジェット / ニュートリノ / 状態方程式 / アインシュタイン方程式 / 数値シミュレーション |
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| Outline of Final Research Achievements |
We have developed a 3-dimensional relativistic magneto-hydro code. Using the code, we have performed simulations of a relativistic jet that is penetrating through its progenitor star. Using the results, we calculated radiation transfer in gamma-ray band. Using our results, we discussed the observed polarization by IKAROS sattellite (Japanese one). Also, we reproduced the observed spectrum of gamma-ray bursts. In fiscal year 2017, we are going to release our very important result which is explaining observations of gamma-ray bursts very well. Due to our results, we believe that we have obtained the evidence that the photospheric emission mechanism is the one for prompt emission of gamma-ray bursts.
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Report
(4 results)
Research Products
(40 results)
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[Presentation] Massive Star Explosions2017
Author(s)
Shigehiro Nagataki
Organizer
International Workshop on Quantum Many-Body Problems in Particle, Nuclear, and Atomic Physics
Place of Presentation
Da Nang, Vietnam
Related Report
Int'l Joint Research / Invited
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