Cosmological Implications of the MAXIMA-1 High-Resolution Cosmic Microwave Background Anisotropy Measurement

By R. Stompor, M. Abroe, P. Ade, A. Balbi, Domingos Barbosa, J. Bock, J. Borrill, A. Boscaleri, P. Bernardis, Pedro G. Ferreira and 10 more. 2001

195 citations recorded by the source corpus.

We discuss the cosmological implications of the new constraints on the power spectrum of the cosmic microwave background (CMB) anisotropy derived from a new high-resolution analysis of the MAXIMA-1 measurement. The power spectrum indicates excess power at l ~ 860 over the average level of power at 411 ≤ l ≤ 785. This excess is statistically significant at the ~95% confidence level. Its position coincides with that of the third acoustic peak, as predicted by generic inflationary models selected to fit the first acoustic peak as observed in the data. The height of the excess power agrees with the predictions of a family of inflationary models with cosmological parameters that are fixed to fit the CMB data previously provided by BOOMERANG-LDB and MAXIMA-1 experiments. Our results therefore lend support for inflationary models and more generally for the dominance of adiabatic coherent perturbations in the structure formation of the universe. At the same time, they seem to disfavor a large variety of the nonstandard (but inflation-based) models that have been proposed to improve the quality of fits to the CMB data and the consistency with other cosmological observables. Within standard inflationary models, our results combined with the COBE/Differential Microwave Radiometer data give best-fit values and 95% confidence limits for the baryon density, Ωbh2 ≃ 0.033 ± 0.013, and the total density, Ω = 0.9. The primordial spectrum slope (ns) and the optical depth to the last scattering surface (τc) are found to be degenerate and to obey the relation ns ≃ (0.99 ± 0.14) + 0.46τc, for τc ≤ 0.5 (all at 95% confidence levels).

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7b1e297eaa1bfb3d64f879c64f2b43d930cc526f

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Citations in the corpus

Determining the Cosmic Distance Scale from Interferometric Measurements of the Sunyaev-Zeldovich Effect (2002, background): “…the geometry of the universe, providing a valuable independent check of the recent supernovae type Ia (Schmidt et al. 1998; Riess et al. 1998; Perlmutter et al. 1999; Goobar et al. 2000) and primary CMB power spectrum results (Pryke et al. 2002; de Bernardis et al. 2002; Stompor et al. 2001).”
The REFLEX galaxy cluster survey - VII. Omega(m) and sigma(8) from cluster abundance and large-scale clustering (2002, background): “Several observational arguments suggest that we live in a geometrically flat Universe in a phase of accelerated cosmic expansion (Riess et al. 1998, Perlmutter et al. 1999, Stompor et al. 2001, Netterfield et al. 2002, Pryke et al. 2002, Sievers et al. 2002).”
The Cosmological Baryon Density from the Deuterium-to-Hydrogen Ratio in QSO Absorption Systems: D/H toward Q1243+3047 (2003, result): “The results from a third experiment, MAXIMA-I (Lee et al. 2001; Stompor et al. 2001) are consistent.”
A Bird's Eye View of f (R)-Gravity (2009, methodology): “27[28℄ Stompor R. et al. Cosmologi al Impli ations of the MAXIMA-1 High-Resolution Cosmi Mi rowave Ba kgroundAnisotropy Measurement.”
The Cosmological Constant and Dark Energy (2002, methodology): “101 The ΩB0h 2 values estimated from the cosmic microwave background anisotropy measured by Netterfield et al. (2002), Pryke et al. (2002), and Stompor et al. (2001), are more consistent with the higher, deuterium based, Burles et al. (2001) range in Eqs.”
Evidence for a non-zero Λ and a low matter density from a combined analysis of the 2dF Galaxy Redshift Survey and cosmic microwave background anisotropies (2001, methodology): “Constraints on cosmological parameters derived from these experiments are described in several recent papers (de Bernadis et al. 2001; Pryke et al. 2001; Stompor et al. 2001; Wang, Tegmark & Zaldarriaga 2001).”
Cosmological constraints from the X-ray gas mass fraction in relaxed lensing clusters observed with Chandra (2002, result): “…from the CMB data reported by Jaffe et al. (2001) are consistent with, though less constraining than, the later analyses of de Bernardis et al. (2002) and Stompor et al. (2001) using the full BOOMERANG and MAXIMA-1 data sets. c© 0000 RAS, MNRAS 000, 000–000 sults is available from gravitational…”
THE EVOLUTION OF X-RAY CLUSTERS OF GALAXIES (2002, background): “…are consistent with Ωm = 0.3 for the currently most favored values of the baryon density parameter, Ωbar ≃ 0.02h −2, as implied by primordial nucleosynthesis (e.g. Burles & Tytler 1998) and by the spectrum of CMB anisotropies (e.g. de Bernardis et al. 2001, Stompor et al. 2001, Pryke et al. 2002).”