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

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. Iacoangell; 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. Placentini; D. Pogosyan; S. Prunet; S. Rao; G. Romeo; J. E. Ruhl; F. Scaramuzzi; D. Sforna; N. Vittorio

doi:10.1038/35010035

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

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. Iacoangell, A. H. Jaffe, A. E. Lange, L. Martinis, S. MasiP. V. Mason, P. D. Mauskopf, A. Melchiorri, L. Miglio, T. Montroy, C. B. Netterfield, E. Pascale, F. Placentini, D. Pogosyan, S. Prunet, S. Rao, G. Romeo, J. E. Ruhl, F. Scaramuzzi, D. Sforna, N. Vittorio

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Abstract

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 I(peak) = (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.

Original language	English (US)
Pages (from-to)	955-959
Number of pages	5
Journal	Nature
Volume	404
Issue number	6781
DOIs	https://doi.org/10.1038/35010035
State	Published - Apr 27 2000
Externally published	Yes

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De Bernardis, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., Coble, K., Crill, B. P., De Gasperis, G., Farese, P. C., Ferreira, P. G., Ganga, K., Giacometti, M., Hivon, E., Hristov, V. V., Iacoangell, A., Jaffe, A. H., Lange, A. E., Martinis, L., ... Vittorio, N. (2000). A flat Universe from high-resolution maps of the cosmic microwave background radiation. Nature, 404(6781), 955-959. https://doi.org/10.1038/35010035

De Bernardis, P, Ade, PAR, Bock, JJ, Bond, JR, Borrill, J, Boscaleri, A, Coble, K, Crill, BP, De Gasperis, G, Farese, PC, Ferreira, PG, Ganga, K, Giacometti, M, Hivon, E, Hristov, VV, Iacoangell, A, Jaffe, AH, Lange, AE, Martinis, L, Masi, S, Mason, PV, Mauskopf, PD, Melchiorri, A, Miglio, L, Montroy, T, Netterfield, CB, Pascale, E, Placentini, F, Pogosyan, D, Prunet, S, Rao, S, Romeo, G, Ruhl, JE, Scaramuzzi, F, Sforna, D & Vittorio, N 2000, 'A flat Universe from high-resolution maps of the cosmic microwave background radiation', Nature, vol. 404, no. 6781, pp. 955-959. https://doi.org/10.1038/35010035

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title = "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 2.73 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 I(peak) = (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.",

author = "{De Bernardis}, P. and Ade, {P. A.R.} and Bock, {J. J.} and Bond, {J. R.} and J. Borrill and A. Boscaleri and K. Coble and Crill, {B. P.} and {De Gasperis}, G. and Farese, {P. C.} and Ferreira, {P. G.} and K. Ganga and M. Giacometti and E. Hivon and Hristov, {V. V.} and A. Iacoangell and Jaffe, {A. H.} and Lange, {A. E.} and L. Martinis and S. Masi and Mason, {P. V.} and Mauskopf, {P. D.} and A. Melchiorri and L. Miglio and T. Montroy and Netterfield, {C. B.} and E. Pascale and F. Placentini and D. Pogosyan and S. Prunet and S. Rao and G. Romeo and Ruhl, {J. E.} and F. Scaramuzzi and D. Sforna and N. Vittorio",

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doi = "10.1038/35010035",

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T1 - A flat Universe from high-resolution maps of the cosmic microwave background radiation

AU - De Bernardis, P.

AU - Ade, P. A.R.

AU - Bock, J. J.

AU - Bond, J. R.

AU - Borrill, J.

AU - Boscaleri, A.

AU - Coble, K.

AU - Crill, B. P.

AU - De Gasperis, G.

AU - Farese, P. C.

AU - Ferreira, P. G.

AU - Ganga, K.

AU - Giacometti, M.

AU - Hivon, E.

AU - Hristov, V. V.

AU - Iacoangell, A.

AU - Jaffe, A. H.

AU - Lange, A. E.

AU - Martinis, L.

AU - Masi, S.

AU - Mason, P. V.

AU - Mauskopf, P. D.

AU - Melchiorri, A.

AU - Miglio, L.

AU - Montroy, T.

AU - Netterfield, C. B.

AU - Pascale, E.

AU - Placentini, F.

AU - Pogosyan, D.

AU - Prunet, S.

AU - Rao, S.

AU - Romeo, G.

AU - Ruhl, J. E.

AU - Scaramuzzi, F.

AU - Sforna, D.

AU - Vittorio, N.

PY - 2000/4/27

Y1 - 2000/4/27

N2 - 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 I(peak) = (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.

AB - 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 I(peak) = (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.

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JF - Nature

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ER -

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

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