A flat Universe from high-resolution maps of the cosmic microwave background radiation

By P. Bernardis, P. Ade, J. Bock, J. Richard Bond, J. Borrill, A. Boscaleri, K. Coble, B. Crill, G. Gasperis, P. Farese and 26 more. Nature, 2000

2,155 citations recorded by the source corpus.

The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73 K cosmic microwave background. Tiny inhomogeneities in the early Universe left their imprint on the microwave background in the form of small anisotropies in its temperature. These anisotropies contain information about basic cosmological parameters, particularly the total energy density and curvature of the Universe. Here we report the first images of resolved structure in the microwave background anisotropies over a significant part of the sky. Maps at four frequencies clearly distinguish the microwave background from foreground emission. We compute the angular power spectrum of the microwave background, and find a peak at Legendre multipole lpeak = (197 ± 6), with an amplitude ΔT200 = (69 ± 8) µK. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favoured by standard inflationary models.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/de3c44d0a0472ad722039fb16e07dee265f59c73

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Citations in the corpus

Categorizing Different Approaches to the Cosmological Constant Problem (2004, background): “Actually, after the remarkable discoveries and subsequent confirmations starting in 1997 (SN)[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11] (WMAP) [12, 13] (Boomerang) [14, 15] (SdSS) [16, 17] (Hubble) [18] that the universe really is accelerating its expansion, there appear to be at present at least three cos”
Cosmological Implications of the MAXIMA-1 High-Resolution Cosmic Microwave Background Anisotropy Measurement (2001, background): “The high signalto-noise multi-frequency data gathered by the balloon-borne BOOMERANG-LDB (de Bernardis et al. 2000) andMAXIMA -”
Intrinsic and extrinsic galaxy alignment (2000, background): “We have assumed the Universe to be flat, as the cosmic microwave background seems to indicate (Kamionkowski, Spergel & Sugiyama 1994; Miller et al. 1999; de Bernardis et al. 2000; Hanany et al. 2000).”
In the Beginning: The First Sources of Light and the Reionization of the Universe (2000, background): “The detection of cosmic microwave background (CMB) anisotropies (Bennett et al. 1996; de Bernardis et al. 2000; Hanany et al. 2000) confirmed the notion that the present large-scale structure in the universe originated from small-amplitude density fluctuations at early times.”
Ground-based and Airborne Telescopes VII (2008, methodology): “Left: The first map of the CMB with angular resolution and signal to noise ratio sufficient to resolve degree-sized causal horizons in the early universe was obtained by the BOOMERanG experiment, at 145 GHz, using an off-axis telescope flown on a stratospheric balloon.(11) The structures visible in ”