A limit on the large angular scale polarization of the cosmic microwave background

被引：52

作者：

Keating, BG ^{[1
]}

O'Dell, CW ^{[1
]}

de Oliveira-Costa, A ^{[1
]}

Klawikowski, S ^{[1
]}

Stebor, N ^{[1
]}

Piccirillo, L ^{[1
]}

Tegmark, M ^{[1
]}

Timbie, PT ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 560卷 / 01期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

cosmic microwave background; cosmology : observations; polarization;

D O I：

10.1086/324222

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an upper limit on the polarization of the cosmic microwave background (CMB) at 7 degrees angular scales in the frequency band between 26 and 36 GHz, produced by the Polarization Observations of Large Angular Regions experiment. The campaign produced a map of linear polarization over the right ascension range 112 degrees -275 degrees at declination 43 degrees. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l=2-20 is 10 muK (95% confidence). The corresponding limit for the B-mode is also 10 muK. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 muK.

引用

页码：L1 / L4

页数：4

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