Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models
文献类型：期刊论文
| 作者 | Nishimichi, Takahiro1; Shirata, Akihito1,2; Taruya, Atsushi1,3,5; Yahata, Kazuhiro1; Saito, Shun1; Suto, Yasushi1,3; Takahashi, Ryuichi4; Yoshida, Naoki4,5; Matsubara, Takahiko4; Sugiyama, Naoshi4,5 |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2009 |
| 卷号 | 61期号:2页码:321-332 |
| 关键词 | cosmology: large-scale structure of universe methods: statistical |
| 英文摘要 | We used a series of cosmological N-body simulations and various analytic models to study the evolution of the matter power spectrum in real space in a A cold dark matter universe. We compared the results of N-body simulations against three analytical model predictions; standard perturbation theory, renormalized perturbation theory, and a closure approximation. We included the effects from a finite simulation box size under comparison. We determined the values of the maximum wavenumbers, k(1%)(lim) and k(3%)(lim) below which the analytic models and the simulation results agree with accuracy to within 1 and 3 percent. We then provided a simple empirical function that describes the convergence regime determined by comparisons between our simulations and the analytical models. We found that if we use the Fourier modes within the convergence regime alone. the characteristic scale of baryon acoustic oscillations can be determined with an accuracy of 1% from future surveys with a volume of a few h(-3) Gpc(3) at z similar to 1 or z similar to 3 in the absence of any systematic distortion of the power spectrum. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | COSMOLOGICAL PERTURBATION-THEORY ; GALAXY REDSHIFT SURVEYS ; LARGE-SCALE STRUCTURE ; POWER-SPECTRUM ; REAL-SPACE ; MATTER ; DENSITY ; DISCRETENESS ; FLUCTUATIONS ; EFFICIENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000266228300017 |
| 源URL | [http://119.78.226.72/handle/331011/19358]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Tokyo, Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan 2.Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan 3.Univ Tokyo, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan 4.Nagoya Univ, Dept Phys & Astrophys, Chikusa Ku, Nagoya, Aichi 4648602, Japan 5.Univ Tokyo, Inst Phys & Math Universe, Chiba 2778582, Japan 6.Shanghai Astron Observ, Shanghai 200030, Peoples R China 7.Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan |
| 推荐引用方式 GB/T 7714 | Nishimichi, Takahiro,Shirata, Akihito,Taruya, Atsushi,et al. Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2009,61(2):321-332. |
| APA | Nishimichi, Takahiro.,Shirata, Akihito.,Taruya, Atsushi.,Yahata, Kazuhiro.,Saito, Shun.,...&Yoshikawa, Kohji.(2009).Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,61(2),321-332. |
| MLA | Nishimichi, Takahiro,et al."Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 61.2(2009):321-332. |
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来源：上海天文台
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