2012 Fiscal Year Final Research Report
Observational Probes of Non-Gaussianity in the Primordial Fluctuations
| Project/Area Number |
22340056
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 | Nagoya University |
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Principal Investigator |
SUGIYAMA Naoshi 名古屋大学, 大学院・理学研究科, 教授 (70222057)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUBARA Takahiko 名古屋大学, 大学院・理学研究科, 准教授 (00282715)
ICHIKI Kiyotomo 名古屋大学, 基礎理論研究センター, 助教 (10534480)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 宇宙論 / 構造形成 / 初期宇宙 / 密度揺らぎ |
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| Research Abstract |
We investigate statistical nature of fluctuations from the homogeneous isotropic Universe, such as temperature anisotropies of cosmic microwave background and large scale structure of the Universe, in particular, deviation from Gaussian distribution, i.e., non-Gaussianity. We study non-Gaussianity in temperature anisotropies caused by primordial magnetic fields and set a constraint from observations. We also study the influence of fluctuations with non-Gaussianity with curtosis on structure formation of the Universe.
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