Is cosmology consistent

By Xiaomin Wang, Max Tegmark, M. Zaldarriaga. 2001

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We perform a detailed analysis of the latest CMB measurements (including BOOMERaNG, DASI, Maxima and CBI), both alone and jointly with other cosmological data sets involving, e.g., galaxy clustering and the Lyman Alpha Forest. We first address the question of whether the CMB data are internally consistent once calibration and beam uncertainties are taken into account, performing a series of statistical tests. With a few minor caveats, our answer is yes, and we compress all data into a single set of 24 bandpowers with associated covariance matrix and window functions. We then compute joint constraints on the 11 parameters of the ``standard'' adiabatic inflationary cosmological model. Out best fit model passes a series of physical consistency checks and agrees with essentially all currently available cosmological data. In addition to sharp constraints on the cosmic matter budget in good agreement with those of the BOOMERaNG, DASI and Maxima teams, we obtain a heaviest neutrino mass range 0.04-4.2 eV and the sharpest constraints to date on gravity waves which (together with preference for a slight red-tilt) favors ``small-field'' inflation models.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/67e6679132c797942482f3af3854e79120ba3f31

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In Astronomy and Astrophysics

Citations in the corpus

The Cosmological Constant and Dark Energy (2002, background): “98 For analyses see Knox and Page (2000), Podariu et al. (2001), Wang, Tegmark, and Zaldarriaga (2002), Durrer, Novosyadlyj, and Apunevych (2002), Miller et al. (2002b), and references therein.”
Parameter constraints for flat cosmologies from cosmic microwave background and 2dFGRS power spectra (2002, methodology): “This combination often has the advantage of allowing a consistency check between the individual data sets (e.g. Wang et al. 2002).”
The power spectrum of galaxies in the 2dF 100k redshift survey (2001, methodology): “The flat ΛCDM “concordance” models from Wang et al. (2002) and Efstathiou et al. (2002), both renormalized to our 2dF measurements, are seen to be quite similar.”
Cosmological constraints from archeops (2002, result): “These results are in good agreement with recent analyses performed by other teams (Netterfield et al. 2002; Pryke et al. 2002; Rubino-Martin et al. 2002; Sievers et al. 2002; Wang et al. 2002).”
Constraints on the Equation of State of Dark Energy and the Hubble Constant from Stellar Ages and the Cosmic Microwave Background (2003, background): “…(CMB; Benoit et al. 2003; Ruhl et al. 2002; Goldstein et al. 2003) in combination with galaxy surveys (Efstathiou et al. 2002; Verde et al. 2002) and lensing (Wang et al. 2002), all indicate that the universe is flat and dominated at present by some form of dark energy with negative pressure.”
What Shapes the Luminosity Function of Galaxies? (2003, unknown): “A discussion of recent results may be found in Wang et al. (2002).”