| Project/Area Number |
26400229
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
OHSUGA Ken 国立天文台, 理論研究部, 助教 (90386508)
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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 |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | ブラックホール天文学 / 降着流 / アウトフロー / 輻射流体力学 / 輻射輸送 / パルサー / X線分光 / 一般相対性理論 / ブラックホール / ジェット / 放射圧 / 逆コンプトン散乱 / 計算コード / 国際研究者交流（ドイツ） |
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| Outline of Final Research Achievements |
We have been working on multi-dimensional radiation-hydrodynamic simulations of supercritical accretion, accretion flow onto compact objects at rates exceeding the classical limit, and have so far clarified its various unique features, such as clumpy outflow. Here, we focus on the effects of supercritical accretion on the cosmological evolution of black holes, and (1) found eruption of neutral outflow from an intermediate-mass black hole via radiation feedback, (2) reproduced the enigmatic hard X-ray spectra by calculating deformation of spectra by multiple Compton scatterings, and (3) performed numerical simulations of accretion onto binary black holes. Finally, we also clarified the central engine of the Ultraluminous X-ray pulsars by calculating the flow dynamics of supercritical accretion column.
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