2017 Fiscal Year Final Research Report
Non-linear dynamics in Extended Gravity Theories
| Project/Area Number |
25400277
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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 |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
鳥居 隆 大阪工業大学, ロボティクス&デザイン工学部, 教授 (00360199)
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| Project Period (FY) |
2013-04-01 – 2018-03-31
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| Keywords | 一般相対性理論 / 重力理論 / ブラックホール / 重力波 / 時空特異点 |
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| Outline of Final Research Achievements |
Direct detection of gravitational waves is realized and it is becoming possible to verify the theory of general relativity using a strong gravity field such as black hole (BH). In this research, we focused on the Gauss-Bonnet gravity theory, which is one of the most influential modified gravity theories, and clarified a part of its dynamics. We showed in multiple models that the occurrence of space-time singularities can be avoided by higher-order curvature terms and that the tendency is prominent as the dimension becomes higher.
We also discussed how a growth model of BHs is distinguished from others in gravitational wave observation. We estimated the number of BH merger events observed by the ground-based gravitational wave interferometers. Furthermore, we proposed a new method to extract ring-down gravitational wave emitted by a BH from actual data.
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| Free Research Field |
一般相対性理論，重力波
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