High redshift detection of the integrated Sachs-Wolfe effect

被引:141
作者
Giannantonio, Tommaso
Crittenden, Robert G.
Nichol, Robert C.
Scranton, Ryan
Richards, Gordon T.
Myers, Adam D.
Brunner, Robert J.
Gray, Alexander G.
Connolly, Andrew J.
Schneider, Donald P.
机构
[1] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England
[2] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[4] Univ Illinois, Dept Astron, Champaign, IL 61820 USA
[5] Georgia Inst Technol, Atlanta, GA 30332 USA
[6] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
来源
PHYSICAL REVIEW D | 2006年 / 74卷 / 06期
关键词
D O I
10.1103/PhysRevD.74.063520
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present evidence of a large angle correlation between the cosmic microwave background measured by WMAP and a catalog of photometrically detected quasars from the SDSS. The observed cross correlation is 0.30 +/- 0.14 mu K at zero lag, with a shape consistent with that expected for correlations arising from the integrated Sachs-Wolfe effect. The photometric redshifts of the quasars are centered at z similar to 1.5, making this the deepest survey in which such a correlation has been observed. Assuming this correlation is due to the ISW effect, this constitutes the earliest evidence yet for dark energy and it can be used to constrain exotic dark energy models.
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页数:10
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