The primordial non-Gaussianity of local type (flocal(NL)) in the WMAP 5-year data: the length distribution of CMB skeleton
文献类型：期刊论文
| 作者 | Hou, Zhen1,2,3,4; Banday, A. J.2,5; Gorski, Krzysztof M.6,7,8; Elsner, Franz2; Wandelt, Benjamin D.9,10 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 407期号:4页码:2141-2156 |
| 关键词 | methods: data analysis cosmic background radiation |
| 英文摘要 | We present skeleton studies of non-Gaussianity in the cosmic microwave background temperature anisotropy observed in the 5-yr Wilkinson Microwave Anisotropy Probe (WMAP) data. The local skeleton is traced on the 2D sphere by cubic spline interpolation which leads to more accurate estimation of the intersection positions between the skeleton and the secondary pixels than conventional linear interpolation. We demonstrate that the skeleton-based estimator of non-Gaussianity of the local type (flocal(NL)) - the departure of the length distribution from the corresponding Gaussian expectation - yields an unbiased and sufficiently converged likelihood function for flocal(NL). |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MICROWAVE BACKGROUND MAPS ; LARGE-SCALE STRUCTURE ; MINKOWSKI FUNCTIONALS ; INFLATIONARY UNIVERSE ; FOREGROUND EMISSION ; PERTURBATION-THEORY ; PROBE ; TEMPERATURE ; ANISOTROPIES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000281948100009 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15941]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Max Planck Inst Astrophys, D-85741 Garching, Germany 3.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 5.Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France 6.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA 7.CALTECH, Pasadena, CA 91125 USA 8.Univ Warsaw Observ, PL-00478 Warsaw, Poland 9.Univ Illinois, Dept Phys, Urbana, IL 61801 USA 10.Univ Illinois, Dept Astron, Urbana, IL 61801 USA |
| 推荐引用方式 GB/T 7714 | Hou, Zhen,Banday, A. J.,Gorski, Krzysztof M.,et al. The primordial non-Gaussianity of local type (flocal(NL)) in the WMAP 5-year data: the length distribution of CMB skeleton[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,407(4):2141-2156. |
| APA | Hou, Zhen,Banday, A. J.,Gorski, Krzysztof M.,Elsner, Franz,&Wandelt, Benjamin D..(2010).The primordial non-Gaussianity of local type (flocal(NL)) in the WMAP 5-year data: the length distribution of CMB skeleton.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,407(4),2141-2156. |
| MLA | Hou, Zhen,et al."The primordial non-Gaussianity of local type (flocal(NL)) in the WMAP 5-year data: the length distribution of CMB skeleton".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 407.4(2010):2141-2156. |
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来源：紫金山天文台
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