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E and B families of the Stokes parameters in the polarized synchrotron and thermal dust foregrounds
Liu H(刘浩); Hao, Liu; James, Creswell; Pavel, Naselsky
2018
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue5Pages:59
SubtypeArticle
AbstractBetter understanding of Galactic foregrounds is one of the main obstacles to detection of primordial gravitational waves through measurement of the B mode in the polarized microwave sky. We generalize the method proposed in [1] and decompose the polarization signals into the E and B families directly in the domain of the Stokes Q, U parameters as (Q, U) equivalent to (Q(E), U-E)+(Q(B), U-B). This also enables an investigation of the morphology and the frequency dependence of these two families, which has been done in the WMAP K, Ka (tracing synchrotron emission) and Planck 2015 HFI maps (tracing thermal dust). The results reveal significant differences in spectra between the E and B families. The spectral index of the E family fluctuates less across the sky than that of the B family, and the same tendency occurs for the polarization angles of the dust and synchrotron channels. The new insight from WMAP and Planck data on the North Polar Spur and BICEP2 zones through our method clearly indicates that these zones are characterized by very low polarization intensity of the B family compared to the E family. We have detected global structure of the B family polarization angles at high Galactic latitudes which cannot be attributed to the cosmic microwave background or instrumental noise. However, we cannot exclude instrumental systematics as a partial contributor to these anomalies.
KeywordCMBR experiments gravitational waves and CMBR polarization
DOI10.1088/1475-7516/2018/05/059
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000456484800001
ADS Bibcode2018JCAP...05..059L
AXRIV CODE1804
inspireid1670668
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:8 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286793
Collection粒子天体物理中心
Corresponding AuthorLiu H(刘浩)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Liu H,Hao, Liu,James, Creswell,et al. E and B families of the Stokes parameters in the polarized synchrotron and thermal dust foregrounds[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(5):59.
APA 刘浩,Hao, Liu,James, Creswell,&Pavel, Naselsky.(2018).E and B families of the Stokes parameters in the polarized synchrotron and thermal dust foregrounds.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),59.
MLA 刘浩,et al."E and B families of the Stokes parameters in the polarized synchrotron and thermal dust foregrounds".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2018):59.
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