منابع مشابه
Nonlinear integrated Sachs-Wolfe effect
We discuss the nonlinear extension to the integrated Sachs-Wolfe effect ~ISW! resulting from the divergence of the large scale structure momentum density field. The nonlinear ISW effect leads to an increase in the total ISW contribution by roughly two orders of magnitude at l;1000. This increase, however, is still below the cosmic variance limit of the primary anisotropies; at further small ang...
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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, 1987) and the NVSS 1.4 GHz, nearly full sky radio galaxy survey (Condon et al., 1998). The level of correlations in these maps is consistent with that predicted for the integrated Sachs-Wolfe (ISW) effect in the co...
متن کاملThe Sachs-Wolfe effect
We present a pedagogical derivation of the SachsWolfe effect, specifically the factor 3 relating the temperature fluctuations to gravitational potentials. The result arises from a cancellation between gravitational redshifts and intrinsic temperature fluctuations which can be derived from a coordinate transformation of the background.
متن کاملThe integrated Sachs-Wolfe effect and the SKA
An important probe of dark energy is the integrated Sachs-Wolfe effect, where cosmic microwave background anisotropies are generated at late times once the dark energy becomes important dynamically. This contribution briefly describes the effect and summarises the present observational evidence for it. A potential survey by the Square Kilometre Array (SKA) covering a large fraction of the sky c...
متن کاملIntegrated Sachs-Wolfe effect: Large scale structure correlation
I discuss the correlation between the late-time integrated Sachs-Wolfe ~ISW! effect in the cosmic microwave background ~CMB! temperature anisotropies and the large scale structure of the local universe. This correlation has been proposed and studied in the literature as a probe of the dark energy and its physical properties. I consider a variety of large scale structure tracers suitable for a d...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.083518