Efficient decomposition of cosmic microwave background polarization maps into pure E, pure B, and ambiguous components

被引：23

作者：

Bunn, Emory F. ^{[1
]}

机构：

[1] Univ Richmond, Dept Phys, Richmond, VA 23173 USA

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 08期

基金：

美国国家科学基金会;

关键词：

PROBE WMAP OBSERVATIONS; CMB POLARIZATION; GRAVITY-WAVES; INTERFEROMETER; ANISOTROPIES; TEMPERATURE; FIELDS; SKY;

D O I：

10.1103/PhysRevD.83.083003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Separation of the B component of a cosmic microwave background (CMB) polarization map from the much larger E component is an essential step in CMB polarimetry. For a map with incomplete sky coverage, this separation is necessarily hampered by the presence of ambiguous modes which could be either E or B modes. I present an efficient pixel-space algorithm for removing the ambiguous modes and separating the map into pure E and B components. The method, which works for arbitrary geometries, does not involve generating a complete basis of such modes and scales the cube of the number of pixels on the boundary of the map.

引用

页数：13

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