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Anisotropic power spectrum and the observed low-l power in PLANCK CMB data

文献类型：期刊论文

作者Pranati K.Rath; Chang Z(常哲); Sang Y(桑语); Zhao D(赵东); Chang, Z; Sang, Y; Zhao, D
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2018
卷号18期号:3页码:29
ISSN号1674-4527
关键词cosmic background radiation large-scale structure of universe
DOI10.1088/1674-4527/18/3/29
文献子类Article
英文摘要In this work, we study a direction dependent power spectrum in anisotropic Finsler space-time. We use this direction dependent power spectrum to address the low-l power observed in WMAP and PLANCK data. The angular power spectrum of the temperature fluctuations has a lower amplitude in comparison to the Lambda CDM model in the multipole range l = 2 - 40. Our theoretical model gives a correction to the isotropic angular power spectrum C-l(TT) due to the breaking of rotational invariance of the primordial power spectrum. We estimate best-fit model parameters along with the six Lambda CDM cosmological parameters using the PLANCK likelihood code in CosmoMC software. We find that this modified angular power spectrum fits the CMB temperature data in the multipole range l = 2 - 10 to a good extent but fails for the whole multipole range l = 2 - 40.
WOS关键词FINE-STRUCTURE CONSTANT ; PROBE WMAP OBSERVATIONS ; SPECIAL RELATIVITY ; COSMOLOGICAL PARAMETERS ; FINSLER SPACETIME ; COLD SPOT ; MICROWAVE ; PARITY ; ASYMMETRY ; SYMMETRY
WOS研究方向Astronomy & Astrophysics
语种英语
CSCD记录号CSCD:6213540
WOS记录号WOS:000428268500005
源URL[http://ir.ihep.ac.cn/handle/311005/285773]  
专题高能物理研究所_理论物理室
通讯作者Pranati K.Rath
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Pranati K.Rath,Chang Z,Sang Y,et al. Anisotropic power spectrum and the observed low-l power in PLANCK CMB data[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(3):29.
APA Pranati K.Rath.,常哲.,桑语.,赵东.,Chang, Z.,...&Zhao, D.(2018).Anisotropic power spectrum and the observed low-l power in PLANCK CMB data.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(3),29.
MLA Pranati K.Rath,et al."Anisotropic power spectrum and the observed low-l power in PLANCK CMB data".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.3(2018):29.

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来源：高能物理研究所

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