A detection of the integrated Sachs–Wolfe effect

S. Boughn; Robert Crittenden

doi:10.1016/j.newar.2005.01.005

A detection of the integrated Sachs–Wolfe effect

S. Boughn, Robert Crittenden

Institute of Cosmology & Gravitation

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Abstract

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 ΛCDM 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.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	New Astronomy Reviews
Volume	49
Issue number	2-6
DOIs	https://doi.org/10.1016/j.newar.2005.01.005
Publication status	Published - 2005

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title = "A detection of the integrated Sachs–Wolfe effect",

abstract = "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 ΛCDM 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.",

author = "S. Boughn and Robert Crittenden",

year = "2005",

doi = "10.1016/j.newar.2005.01.005",

language = "English",

volume = "49",

pages = "75--78",

journal = "New Astronomy Reviews",

issn = "1387-6473",

publisher = "Elsevier BV",

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T1 - A detection of the integrated Sachs–Wolfe effect

AU - Boughn, S.

AU - Crittenden, Robert

PY - 2005

Y1 - 2005

N2 - 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 ΛCDM 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.

AB - 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 ΛCDM 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.

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DO - 10.1016/j.newar.2005.01.005

M3 - Article

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VL - 49

SP - 75

EP - 78

JO - New Astronomy Reviews

JF - New Astronomy Reviews

IS - 2-6

ER -

A detection of the integrated Sachs–Wolfe effect

Abstract

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