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
收藏
页码：L73 / L76
页数：4
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