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

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type , Journal 01 Apr 2000Embargo end date: 01 Jan 2000 Italy, United States, United Kingdom, Italy, France, Italy, France, United States, France, United States, France, United States Publisher:Springer Science and Business Media LLCJournal:Nature, volume 404, pages 955-959 (issn: 0028-0836, eissn: 1476-4687, Copyright policy )
Authors: J. R. Bond; Enzo Pascale; A. Boscaleri; T. E. Montroy; Giovanni Romeo; Dmitry Pogosyan; Nicola Vittorio; +32 Authors

doi: 10.1038/35010035 , 10.48550/arxiv.astro-ph/0004404

pmid: 10801117

arXiv: http://arxiv.org/abs/astro-ph/0004404 , astro-ph/0004404

handle: 10281/399256 , 2108/64402 , 11573/251349 , 10044/1/60851

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

Abstract

The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73K 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 $\ell_{peak}=(197 \pm 6)$, with an amplitude $DT_{200}=(69 \pm 8)��K$. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favoured by standard inflationary scenarios.

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Italy, United States, United Kingdom, Italy, France, Italy, France, United States, France, United States, France, United States
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Keywords

General Physics, General Science & Technology, Blackbody Radiation, FOS: Physical sciences, General and miscellaneous//mathematics, Settore FIS/05 - ASTRONOMIA E ASTROFISICA, CMB, [ PHYS.ASTR.CO ] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics, 530, and information science, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], computing, Universe, astro-ph, Amplitudes, Radiations, MD Multidisciplinary, Relict Radiation, General and miscellaneous//mathematics, computing, and information science, Nonluminous Matter, Astrophysics (astro-ph), Computing, 500, 99 General And Miscellaneous//Mathematics, 520, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], And Information Science, Energy Density, 71 Classical And Quantum Mechanics, Sky, Multipoles, [PHYS.ASTR.CO] Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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