Exploring effects of dark energy and finite-mass neutrinos on cosmic structure formation
| Project/Area Number |
20740119
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TAKADA Masahiro The University of Tokyo, 数物連携宇宙研究機構, 特任准教授 (40374889)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 宇宙物理(理論) / 暗黒エネルギー / ニュートリノ質量 / 暗黒物質 / 重力レンズ / 宇宙構造形成 / 構造形成 / 重カレンズ |
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| Research Abstract |
We developed a novel method for computing galaxy power spectrum in a mixed dark matter (cold dark matter plus finite-mass neutrinos) model, taking into account effects of nonlinear clustering and nonlinear, scale-dependent galaxy bias. By comparing the model predictions to the SDSS galaxy power spectrum, we succeeded in deriving the upper limit on the sum of three-flavor neutrinos given as M_<ν,tot><0.81eV (95.%C.L.).
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Report
(4 results)
Research Products
(28 results)
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[Presentation] Neutrino masses and cosmic simulations
Author(s)
M.Takada
Organizer
Workshop : The Future of Neutrino Mass Measurements : Terrestrial, Astrophysical, and Cosmological Measurements in the Next Decade
Place of Presentation
Institute for Nuclear Theory, U.Washington, USA
Related Report
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