| Project/Area Number |
26887012
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Okumura Teppei 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (70402427)
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| Project Period (FY) |
2014-08-29 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 宇宙大規模構造 / 暗黒エネルギー / 重力理論の検証 / 銀河サーベイ / 赤方偏移変形 / 赤方偏移変形効果 / ダークエネルギー / 宇宙の大規模構造 / 観測的宇宙論 / 大規模銀河サーベイ / パワースペクトル |
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| Outline of Final Research Achievements |
I have performed theoretical and observational studies using galaxy surveys to understand properties of the cosmic acceleration. On theoretical side, considering the fact that future large surveys can determine the dark energy properties with percent accuracy, I have developed a theoretical model which accurately predicts the galaxy power spectrum by combining the cosmological perturbation theory and the empirical halo model. On the observational side, I have led the cosmological analysis of the international project called the Subaru FastSound Galaxy Survey, and I performed a test on gravity theory at the distant universe 10 billion years away. For the first time in the world, I have found that the gravity law is consistent with Einsteins's general relativity at such distant universe.
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