Can Baryon-Dark Matter Streaming Motion Explain Supermassive Blackholes in the Early Universe?
| Project/Area Number |
19K23455
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0204:Astronomy, earth and planetary science, and related fields
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Park Hyunbae 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (40842985)
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| Project Period (FY) |
2019-08-30 – 2022-03-31
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| Project Status |
Granted (Fiscal Year 2020)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | cosmology / astrophysics / early universe / first stars / numerical simulation / Cosmology / Numerical simulation / Reionization / First stars / Blackholes / Gas dynamics / Blackhole |
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| Outline of Research at the Start |
We shall show that the streaming motion between gas and dark matter leads to formation of blackholes of ~100,000 solarmass when universe was 0.1 billion years old. Then, we shall study the signature of those blackholes to be observed by future giant telescopes and gravitational wave experiment.
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| Outline of Annual Research Achievements |
[Achievement 1] Finished building a pipeline for creating initial conditions of cosmological simulations with the streaming effect.
[Achievement 2] Published two first-authored papers on how the streaming velocity affect the gas structures of early universe. See the next section for the detail of the published papers.
[Achievement 3] Provided my main collaborator (Dr. Shingo Hirano) with my early universe simulation data so that he can run blackhole formation simulation.
[Achievement 4] Transferring my skills and pipe lines to graduate students at the University of Tokyo.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
The proposed research project is not only progressing as planned, but also stimulating new projects with new collaborators. The final remaining goal is to produce a paper on blackhole formation with the streaming velocity. Regarding the new projects, please read "Planning for the Future Work" for details.
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| Strategy for Future Research Activity |
[Plan 1] I will be able to study the impacts of the streaming velocity on objects other than blackholes using my own simulation pipeline.
[Plan 2] I will keep supporting other simulation works by providing initial conditions with the baryon-dark matter streaming velocity.
[Plan 3] We will implement the results from my small-scale simulations in the large-scale simulations of my international collaborators. The collaborators include Prof. Andrei Mesinger at Scuola Normale Superiore, Prof. Julian Munos at Harvard University, and Dr. Jaehong Park at Korea Institute for Advanced Study.
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Report
(2 results)
Research Products
(20 results)
