A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation

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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. ... continued below

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de Bernardis, P.; Ade, P.A.R.; Bock, J.J.; Bond, J.R.; Borrill,J.; Boscaleri, A. et al. April 28, 2000.

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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 {ell}{sub peak} = (197 {+-} 6), with an amplitude DT{sub 200} = (69 {+-} 8){mu}K. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favored by standard inflationary scenarios.

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  • Journal Name: Astrophysics Journal; Journal Volume: 404; Related Information: Journal Publication Date: 2000

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  • Report No.: LBNL--60039
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 886078
  • Archival Resource Key: ark:/67531/metadc873597

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  • April 28, 2000

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 30, 2016, 2:42 p.m.

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de Bernardis, P.; Ade, P.A.R.; Bock, J.J.; Bond, J.R.; Borrill,J.; Boscaleri, A. et al. A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation, article, April 28, 2000; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc873597/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.