Theoretical study on binary black hole formation
About this project
- Japan Grant Number
- JP17H06360
- Funding Program
- Grants-in-Aid for Scientific Research
- Funding organization
- Japan Society for the Promotion of Science
- Project/Area Number
- 17H06360
- Research Category
- Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Allocation Type
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- Single-year Grants
- Review Section / Research Field
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- Science and Engineering
- Research Institution
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- Tohoku University
- Project Period (FY)
- 2017-06-30 〜 2022-03-31
- Project Status
- Completed
- Budget Amount*help
- 122,980,000 Yen (Direct Cost: 94,600,000 Yen Indirect Cost: 28,380,000 Yen)
Research Abstract
The origin of black hole (BH) binaries, which are gravitational wave sources, was investigated through theoretical research. The main results obtained are as follows: 1)Concerning the formation of isolated massive binary systems, we studied the properties of massive binaries that could form in the low-metallicity environment of the early universe. We found that the first stars can form as massive binary systems with masses ranging from several tens of solar masses. 2) The evolution of low-metallicity binary systems was examined using an analytical model. We demonstrated that there is no contradiction even if all the BH mergers observed through gravitational wave detection originate from isolated binary systems. 3) The formation rate of binary black holes due to dynamic interactions between stars was estimated through gravitational N-body simulations of cluster evolution. We found that even in open clusters, binary black holes can form through the dynamic interactions between stars.
Details 詳細情報について
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- CRID
- 1040282256936327040
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- Text Lang
- ja
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- Data Source
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- KAKEN
- IRDB