2010 Fiscal Year Final Research Report
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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| Keywords | 宇宙物理(理論) |
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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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Research Products
(18 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
Year and Date
00000208-00000211
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