A detection of the integrated Sachs-Wolfe effect

被引：47

作者：

Boughn, SP ^{[1
]}

Crittenden, RG

机构：

[1] Haverford Coll, Dept Astron, Haverford, PA 19041 USA

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

[3] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England

来源：

NEW ASTRONOMY REVIEWS | 2005年 / 49卷 / 2-6期

关键词：

cosmic microwave background; X-rays : general; large-scale structure of the universe;

D O I：

10.1016/j.newar.2005.01.005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have detected statistically significant correlations between the cosmic microwave background and two tracers of large-scale structure, the HEAO1 A2 full sky hard X-ray map [Boldt, E., 1987. Phys. Rep. 146, 215] and the NVSS 1.4 GHz, nearly full sky radio galaxy survey [Condon, J., et al., 1998. Astron. J. 115, 1693]. The level of correlations in these maps is consistent with that predicted for the integrated Sachs-Wolfe (ISW) effect in the context of a Lambda CDM cosmological model and, therefore, provides independent evidence for a cosmological constant. A maximum likelihood fit to the amplitude of the ISW effect relative to the predicted value is 1.13 +/- 0.35 (statistical error only). (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：75 / 78

页数：4

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