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	Anisotropic power spectrum and the observed low-l power in planck cmb data
	Chang, Zhe1,2; Rath, Pranati K.1,3; Sang, Yu1,2; Zhao, Dong1,2
刊名	Research in astronomy and astrophysics
	2018-03-01
卷号	18期号:3页码:10
关键词	Cosmic background radiation Large-scale structure of universe
ISSN号	1674-4527
DOI	10.1088/1674-4527/18/3/29
通讯作者	Rath, pranati k.(pranati@ihep.ac.cn)
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
WOS类目	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000428268500005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178196
专题	高能物理研究所
通讯作者	Rath, Pranati K.
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chang, Zhe,Rath, Pranati K.,Sang, Yu,et al. Anisotropic power spectrum and the observed low-l power in planck cmb data[J]. Research in astronomy and astrophysics,2018,18(3):10.
APA	Chang, Zhe,Rath, Pranati K.,Sang, Yu,&Zhao, Dong.(2018).Anisotropic power spectrum and the observed low-l power in planck cmb data.Research in astronomy and astrophysics,18(3),10.
MLA	Chang, Zhe,et al."Anisotropic power spectrum and the observed low-l power in planck cmb data".Research in astronomy and astrophysics 18.3(2018):10.

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