A MEASUREMENT OF ARCMINUTE ANISOTROPY IN THE COSMIC MICROWAVE BACKGROUND WITH THE SUNYAEV-ZEL'DOVICH ARRAY

被引：23

作者：

Sharp, Matthew K. ^{[1
,2
]}

Marrone, Daniel P. ^{[1
,3
]}

Carlstrom, John E. ^{[1
,2
,3
,4
]}

Culverhouse, Thomas ^{[1
,3
]}

Greer, Christopher ^{[1
,3
]}

Hawkins, David ^{[5
]}

Hennessy, Ryan ^{[1
,3
]}

Joy, Marshall ^{[6
]}

Lamb, James W. ^{[5
]}

Leitch, Erik M. ^{[1
,3
]}

Loh, Michael ^{[1
,2
]}

Miller, Amber ^{[7
,8
]}

Mroczkowski, Tony ^{[7
,9
]}

Muchovej, Stephen ^{[5
,9
]}

Pryke, Clem ^{[1
,3
,4
]}

Woody, David ^{[5
]}

机构：

[1] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

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

[3] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

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

[5] CALTECH, Owens Valley Radio Observ, Big Pine, CA 93513 USA

[6] NASA, George C Marshall Space Flight Ctr, Dept Space Sci, Huntsville, AL 35812 USA

[7] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[8] Columbia Univ, Dept Phys, New York, NY 10027 USA

[9] Columbia Univ, Dept Astron, New York, NY 10027 USA

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 713卷 / 01期

基金：

美国国家科学基金会;

关键词：

cosmic background radiation; cosmological parameters; cosmology: observations; large-scale structure of universe; techniques: interferometric; ANGULAR POWER SPECTRUM; GALACTIC EMISSION; GALAXY CLUSTERS; RADIO-SOURCES; PROBE; DUST; GHZ; BAND;

D O I：

10.1088/0004-637X/713/1/82

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present 30 GHz measurements of the angular power spectrum of the cosmic microwave background (CMB) obtained with the Sunyaev-Zel'dovich Array. The measurements are sensitive to arcminute angular scales, where secondary anisotropy from the Sunyaev-Zel'dovich effect (SZE) is expected to dominate. For a broad bin centered at multipole 4066, we find 67(-50)(+77) mu K(2); of which 26 +/- 5 mu K(2) is the expected contribution from primary CMB anisotropy and 80 +/- 54 mu K(2) is the expected contribution from undetected radio sources. These results imply an upper limit of 155 mu K(2) (95% CL) on the secondary contribution to the anisotropy in our maps. This level of SZE anisotropy power is consistent with expectations based on recent determinations of the normalization of the matter power spectrum, i.e., sigma(8) similar to 0.8.

引用

页码：82 / 89

页数：8

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