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题名: Uncorrelated estimates of the primordial power spectrum
作者: Guo, ZK ;  Zhang, YZ
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2011
期号: 11, 页码:32
关键词: OBSERVATIONS COSMOLOGICAL INTERPRETATION ;  WMAP DATA ;  ANISOTROPY ;  RECONSTRUCTION ;  INFLATION ;  TELESCOPE ;  MODEL
学科分类: Physics
通讯作者: Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
部门归属: [Guo, Zong-Kuan; Zhang, Yuan-Zhong] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We use the localized principle component analysis to detect deviations front scale invariance of the primordial power spectrum of curvature perturbations. With the technique we make uncorrelated estimates of the primordial power spectrum with five wavenumber bins. In the framework of a minimal ACDM model, using the latest cosmic microwave background data from the WMAP and ACT experiments we find that more than 95% of the preferred models are incompatible with the assumption of scale-invariance, but still compatible with a power-law primordial spectrum. We also forecast the sensitivity and constraints achievable by the Planck experiment by performing Monte Carlo studies on simulated data. Planck could significantly improve the constraints on the primordial power spectrum, especially at small scales by roughly a factor of 4.
资助者: Chinese Academy of Science; National Basic Research Program of China [2010CB832805]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000298141300032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14239
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Guo, ZK,Zhang, YZ. Uncorrelated estimates of the primordial power spectrum[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(11):32.
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