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Title: A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground 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 {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.

Authors:
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Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director. Office of Science. Office of AdvancedScientific Computing Research; National Science Foundation, NationalAeronautics and Space Administration; Particle Physics and AstronomyResearch Council UK, Programma Nazionale di Ricerche
OSTI Identifier:
886078
Report Number(s):
LBNL-60039
R&D Project: KX0410; BnR: KJ0102000; TRN: US200616%%914
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Astrophysics Journal
Additional Journal Information:
Journal Volume: 404; Related Information: Journal Publication Date: 2000
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; AMPLITUDES; BLACKBODY RADIATION; ENERGY DENSITY; MULTIPOLES; NONLUMINOUS MATTER; RADIATIONS; RELICT RADIATION; SKY; UNIVERSE

Citation Formats

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., Iacoangeli, A., Jaffe, A.H., Lange, A.E., Martinis, L., Masi, S., Mason,P., Mauskopf, P.D., Melchiorri, A., Miglio, L., Montroy, T., Netterfield,C.B., Pascale, E., Piacentini, F., Pogosyan, D., Prunet, S., Rao, S., Romeo, G., Ruhl, J.E., Scaramuzzi, F., Sforna, D., and Vittorio, N. A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation. United States: N. p., 2000. Web.
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., Iacoangeli, A., Jaffe, A.H., Lange, A.E., Martinis, L., Masi, S., Mason,P., Mauskopf, P.D., Melchiorri, A., Miglio, L., Montroy, T., Netterfield,C.B., Pascale, E., Piacentini, F., Pogosyan, D., Prunet, S., Rao, S., Romeo, G., Ruhl, J.E., Scaramuzzi, F., Sforna, D., & Vittorio, N. A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation. United States.
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., Iacoangeli, A., Jaffe, A.H., Lange, A.E., Martinis, L., Masi, S., Mason,P., Mauskopf, P.D., Melchiorri, A., Miglio, L., Montroy, T., Netterfield,C.B., Pascale, E., Piacentini, F., Pogosyan, D., Prunet, S., Rao, S., Romeo, G., Ruhl, J.E., Scaramuzzi, F., Sforna, D., and Vittorio, N. Fri . "A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation". United States. https://www.osti.gov/servlets/purl/886078.
@article{osti_886078,
title = {A Flat Universe from High-Resolution Maps of the Cosmic MicrowaveBackground Radiation},
author = {de Bernardis, P. and Ade, P.A.R. and Bock, J.J. and Bond, J.R. and Borrill,J. and Boscaleri, A. and Coble, K. and Crill, B.P. and De Gasperis, G. and Farese, P.C. and Ferreira, P.G. and Ganga, K. and Giacometti, M. and Hivon, E. and Hristov, V.V. and Iacoangeli, A. and Jaffe, A.H. and Lange, A.E. and Martinis, L. and Masi, S. and Mason,P. and Mauskopf, P.D. and Melchiorri, A. and Miglio, L. and Montroy, T. and Netterfield,C.B. and Pascale, E. and Piacentini, F. and Pogosyan, D. and Prunet, S. and Rao, S. and Romeo, G. and Ruhl, J.E. and Scaramuzzi, F. and Sforna, D. and Vittorio, N.},
abstractNote = {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.},
doi = {},
journal = {Astrophysics Journal},
number = ,
volume = 404,
place = {United States},
year = {2000},
month = {4}
}