New limits on the polarized anisotropy of the cosmic microwave background at subdegree angular scales

被引：25

作者：

Hedman, MM

Barkats, D

Gundersen, JO

McMahon, JJ

Staggs, ST

Winstein, B

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Univ Miami, Dept Phys, Miami, FL 33146 USA

[3] Univ Chicago, Ctr Cosmol Phys, Chicago, IL 60637 USA

[4] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[5] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 573卷 / 02期

基金：

美国国家科学基金会;

关键词：

cosmic microwave background; cosmology : observations; early universe;

D O I：

10.1086/342020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We update the limit from the 90 GHz Princeton IQU Experiment ground-based polarimeter on the magnitude of any polarized anisotropy of the cosmic microwave radiation. With a second year of data, we have now limited both Q and U on a ring of 1degrees radius. The window functions are broad: for E-mode polarization, the effective l is [l(E)] = 191(-132)(+143). We find that the E-mode signal can be no greater than 8.4 muK (95% CL), assuming no B-mode polarization. Limits on a possible B- mode signal are also presented.

引用

页码：L73 / L76

页数：4

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