Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field
文献类型：期刊论文
| 作者 | Kitaura, Francisco-Shu1; Chuang, Chia-Hsun1; Liang, Yu2,3; Zhao, Cheng2,3; Tao, Charling2,3,4; Rodriguez-Torres, Sergio5,6,7; Eisenstein, Daniel J.8; Gil-Marin, Hector9,10; Kneib, Jean-Paul11,12; McBride, Cameron8 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2016-04-25 |
| 卷号 | 116期号:17 |
| 英文摘要 | Sound waves from the primordial fluctuations of the Universe imprinted in the large-scale structure, called baryon acoustic oscillations (BAOs), can be used as standard rulers to measure the scale of the Universe. These oscillations have already been detected in the distribution of galaxies. Here we propose to measure BAOs from the troughs (minima) of the density field. Based on two sets of accurate mock halo catalogues with and without BAOs in the seed initial conditions, we demonstrate that the BAO signal cannot be obtained from the clustering of classical disjoint voids, but it is clearly detected from overlapping voids. The latter represent an estimate of all troughs of the density field. We compute them from the empty circumsphere centers constrained by tetrahedra of galaxies using Delaunay triangulation. Our theoretical models based on an unprecedented large set of detailed simulated void catalogues are remarkably well confirmed by observational data. We use the largest recently publicly available sample of luminous red galaxies from SDSS-III BOSS DR11 to unveil for the first time a > 3 sigma BAO detection from voids in observations. Since voids are nearly isotropically expanding regions, their centers represent the most quiet places in the Universe, keeping in mind the cosmos origin and providing a new promising window in the analysis of the cosmological large-scale structure from galaxy surveys. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374963600003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5367]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany 2.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 3.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 4.Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France 5.Univ Autonoma Madrid, Inst Fis Teor UAM CSIC, E-28049 Madrid, Spain 6.Campus Int Excellence UAM CSIC, Cantoblanco, E-28049 Madrid, Spain 7.Univ Autonoma Madrid, Dept Fis Teor M8, Cantoblanco, E-28049 Madrid, Spain 8.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 9.Univ Paris 04, ILP, 98 Bis Blvd Arago, F-75014 Paris, France 10.Univ Paris 06, Lab Phys Nucl & Hautes Energies, 4 Pl Jussieu,Tour 22, F-75005 Paris, France |
| 推荐引用方式 GB/T 7714 | Kitaura, Francisco-Shu,Chuang, Chia-Hsun,Liang, Yu,et al. Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field[J]. PHYSICAL REVIEW LETTERS,2016,116(17). |
| APA | Kitaura, Francisco-Shu.,Chuang, Chia-Hsun.,Liang, Yu.,Zhao, Cheng.,Tao, Charling.,...&Zhao, Gong-Bo.(2016).Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field.PHYSICAL REVIEW LETTERS,116(17). |
| MLA | Kitaura, Francisco-Shu,et al."Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field".PHYSICAL REVIEW LETTERS 116.17(2016). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。