First Year Wilkinson Microwave Anisotropy Probe Observations: Dark Energy Induced Correlation with Radio Sources
By M. Nolta, E. L. Wright, L. Page, C. Bennett, Mark Halpern, Gary F. Hinshaw, N. Jarosik, Alan Kogut, M. Limon, S. Meyer and 3 more. Astrophysical Journal, 2003
179 citations recorded by the source corpus.
The first-year Wilkinson Microwave Anisotropy Probe (WMAP) data, in combination with any one of a number of other cosmic probes, show that we live in a flat Λ-dominated cold dark matter (CDM) universe with Ωm ≈ 0.27 and ΩΛ ≈ 0.73. In this model the late-time action of the dark energy, through the integrated Sachs-Wolfe effect, should produce cosmic microwave background (CMB) anisotropies correlated with matter density fluctuations at z ≲ 2 (Crittenden & Turok 1996). The measurement of such a signal is an important independent check of the model. We cross-correlate the NRAO VLA Sky Survey (NVSS) radio source catalog (Condon et al. 1998) with the WMAP data in search of this signal, and see indications of the expected correlation. Assuming a flat ΛCDM cosmology, we find ΩΛ > 0 (95% CL, statistical errors only) with the peak of the likelihood at ΩΛ = 0.68, consistent with the preferred WMAP value. A closed model with Ωm = 1.28, h = 0.33, and no dark energy component (ΩΛ = 0), marginally consistent with the WMAP CMB TT angular power spectrum, would produce an anticorrelation between the matter distribution and the CMB. Our analysis of the cross-correlation of the WMAP data with the NVSS catalog rejects this cosmology at the 3 σ level.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/748a060936f61b4def904c544a3b800a7709591b
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
Citations in the corpus
- Hubble Space Telescope and Ground-based Observations of Type Ia Supernovae at Redshift 0.5: Cosmological Implications (2005, background): “First, Afshordi et al. (2004), Boughn & Crittenden (2004), Fosalba et al. (2003), Nolta et al. (2004), and Scranton et al. (2005) study the Integrated SachsWolfe (ISW) effect based on the cross-correlation between the SloanDigital Sky Survey sample of galaxies and the temperature of the…”
- Fundamental physics with the Square Kilometre Array (2018, background): “The ISW effect has been detected (Nolta et al., 2004; Pietrobon et al., 2006; Ho et al., 2008; Giannantonio et al., 2008a; Raccanelli et al., 2008; Giannantonio et al., 2012; Planck Collaboration et al., 2014a, 2016f) through crosscorrelation of CMB maps at GHz-frequencies with galaxy surveys.”
- A full sky, low foreground, high resolution CMB map from WMAP (2008, methodology): “To search for correlations of the CMB map with other emissions (Nolta et al. 2004; Fosalba & Gaztañaga 2004; Cabré et al. 2006; Cao et al. 2006; Pietrobon et al. 2006; McEwen et al. 2007; Rassat et al. 2007); –”
- Observational probes of cosmic acceleration (2012, background): “The WMAP era, combined with the availability of large optical galaxy samples with well-characterized redshift distributions, led to renewed interest in ISW and to the first marginal-significance detections (Fosalba et al., 2003; Scranton et al., 2003; Afshordi et al., 2004; Boughn and Crittenden, 20”
- New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy (2006, methodology): “Measurements of the integrated Sachs-Wolfe effect (e.g., Afshordi et al. 2004; Boughn & Crittenden 2004; Fosalba et al. 2003; Nolta et al. 2004; Scranton et al. 2005)more directly suggest the presence of dark energywith a negative pressure.”