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Testing statistical isotropy in cosmic microwave background polarization maps

文献类型：期刊论文

作者Samal, PK; Rath, PK; Aluri, PK; Mishra, DD; a, S; P
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018
卷号475期号:4页码:4357-4366
关键词methods: data analysis method: statistical cosmic background radiation
ISSN号0035-8711
DOI10.1093/mnras/sty007
文献子类Article
英文摘要We apply our symmetry based Power tensor technique to test conformity of PLANCK Polarization maps with statistical isotropy. On a wide range of angular scales (l = 40 - 150), our preliminary analysis detects many statistically anisotropic multipoles in foreground cleaned full sky PLANCK polarization maps viz., COMMANDER and NILC. We also study the effect of residual foregrounds that may still be present in the Galactic plane using both common UPB77 polarization mask, as well as the individual component separation method specific polarization masks. However, some of the statistically anisotropic modes still persist, albeit significantly in NILC map. We further probed the data for any coherent alignments across multipoles in several bins from the chosen multipole range.
电子版国际标准刊号1365-2966
WOS关键词ANISOTROPY-PROBE ; COLD SPOT ; COHERENT ORIENTATIONS ; COSMOLOGICAL SCALES ; POWER ASYMMETRY ; SKY ANALYSIS ; WMAP DATA ; CMB ; PROPAGATION ; MULTIPOLES
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000428835700005
源URL[http://ir.ihep.ac.cn/handle/311005/285792]  
专题高能物理研究所_理论物理室
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		 Samal, PK,Rath, PK,Aluri, PK,et al. Testing statistical isotropy in cosmic microwave background polarization maps[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,475(4):4357-4366.
APA Samal, PK,Rath, PK,Aluri, PK,Mishra, DD,a, S,&P.(2018).Testing statistical isotropy in cosmic microwave background polarization maps.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,475(4),4357-4366.
MLA Samal, PK,et al."Testing statistical isotropy in cosmic microwave background polarization maps".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.4(2018):4357-4366.

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来源：高能物理研究所

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