Journal
NEW ASTRONOMY REVIEWS
Volume 49, Issue 2-6, Pages 75-78Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.newar.2005.01.005
Keywords
cosmic microwave background; X-rays : general; large-scale structure of the universe
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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.
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