Testing statistical isotropy in cosmic microwave background polarization maps

doi:10.1093/mnras/sty007

	Testing statistical isotropy in cosmic microwave background polarization maps
	Samal, PK; Rath, PK; Aluri, PK; Mishra, DD; a, S; P
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	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
DOI	10.1093/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
内容类型	期刊论文
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.