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

de Bernardis, P. and Crill, B. P. and Ganga, K. and Hivon, E. and Hristov, V. V. and Lange, A. E. and Mason, P. V. (2000) A flat Universe from high-resolution maps of the cosmic microwave background radiation. Nature, 404 (6781). p. 955. ISSN 0028-0836.

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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 l_(peak) = (197 ± 6), with an amplitude ΔT_(200) = (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.

Item Type:Article
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URLURL TypeDescription ReadCube access
de Bernardis, P.0000-0001-6547-6446
Crill, B. P.0000-0002-4650-8518
Mason, P. V.0000-0002-7963-7420
Additional Information:© 2000 Macmillan Magazines Ltd. Received 24 March 2000; Accepted 3 April 2000. The Boomerang experiment was supported by Programma Nazionale di Ricerche in Antartide, Universita' di Roma "La Sapienza", and Agenzia Spaziale Italiana in Italy, by the NSF and NASA in the USA, and by PPARC in the UK. We thank the staff of the National Scientific Ballooning Facility, and the United States Antarctic Program personnel in McMurdo for their preflight support and an effective LDB flight. DOE/NERSC provided the supercomputing facilities.
Funding AgencyGrant Number
Programma Nazionale di Ricerche in AntartideUNSPECIFIED
Universita' di Roma La SapienzaUNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Issue or Number:6781
Record Number:CaltechAUTHORS:20150330-101418834
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Official Citation:A flat Universe from high-resolution maps of the cosmic microwave background radiation p955 P. de Bernardis, P. A. R. Ade, J. J. Bock, J. R. Bond, J. Borrill, A. Boscaleri, K. Coble, B. P. Crill, G. De Gasperis, P. C. Farese, P. G. Ferreira, K. Ganga, M. Giacometti, E. Hivon, V. V. Hristov, A. Iacoangeli, A. H. Jaffe, A. E. Lange, L. Martinis, S. Masi, P. V. Mason, P. D. Mauskopf, A. Melchiorri, L. Miglio, T. Montroy, C. B. Netterfield, E. Pascale, F. Piacentini, D. Pogosyan, S. Prunet, S. Rao, G. Romeo, J. E. Ruhl, F. Scaramuzzi, D. Sforna and N. Vittorio doi:10.1038/35010035
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56211
Deposited By: Ruth Sustaita
Deposited On:30 Mar 2015 19:54
Last Modified:09 Mar 2020 13:19

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