Results 251 to 260 of about 132,304 (298)

Cosmic Microwave Background Radiation

Reviews of Modern Physics, 1999
Most astronomers and physicists now believe that we live in an expanding universe that evolved from an early state of extremely high density and temperature. Measurements of the spectrum and anisotropy of the cosmic microwave background radiation (CMBR) provide strong evidence supporting this picture. Today, the spectrum of the CMBR matches that of a 2.
Lyman Page, David Wilkinson
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A flat Universe from high-resolution maps of the cosmic microwave background radiation

Nature, 2000
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.
P. Bernardis, P. Ade, J. Bock, J. Bond, J. Borrill, A. Boscaleri, K. Coble, B. Crill, G. Gasperis, P. Farese, P. Ferreira, K. Ganga, M. Giacometti, E. Hivon, V. Hristov, A. Iacoangeli, A. Jaffe, A. Lange, L. Martinis, S. Masi, P. Mason, P. Mauskopf, A. Melchiorri, L. Miglio, T. Montroy, C. Netterfield, E. Pascale, F. Piacentini, D. Pogosyan, S. Prunet, S. Rao, G. Romeo, J. Ruhl, F. Scaramuzzi, D. Sforna, N. Vittorio   +35 more
semanticscholar   +1 more source

Cosmic microwave background anisotropy

Nature, 1986
Current hypotheses for the origin of structure in the Universe lead to predictions of the amplitudes of anisotropies in the cosmic microwave background radiation. The dipole anisotropy is related to density fluctuations on large scales and to other determinations of our motion relative to distant galaxies.
Nick, Kaiser, Joseph, Silk
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Cosmic Microwave Background Fluctuations

2006
Several experiments have recently detected very low contrast, sub-horizon scale structures in the Cosmic Microwave Background (CMB). In the current cosmological model, these structures result from acoustic oscillations of the primeval plasma at recombination ( $z \sim 1100$ ).
MASI, Silvia, P. A. R. ADE, DE BERNARDIS, Paolo, J. J. BOCK, J. R. BOND, J. BORRILL, A. BOSCALERI, K. COBLE, C. R. CONTALDI, B. P. CRILL, G. DE TROIA, P. FERREIRA, K. GANGA, M. GIACOMETTI, E. HIVON, V. V. HRISTOV, A. IACOANGELI, A. H. JAFFE, W. C. JONES, A. E. LANGE, L. MARTINIS, P. MASON, P. D. MAUSKOPF, MELCHIORRI, Alessandro, T. MONTROY, NATI, FEDERICO, P. NATOLI, C. B. NETTERFIELD, PASCALE, ENZO, PIACENTINI, Francesco, D. POGOSYAN, G. POLENTA, F. PONGETTI, S. PRUNET, G. ROMEO, J. E. RUHL, F. SCARAMUZZI   +36 more
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The cosmic microwave background radiation

Reviews of Modern Physics, 1979
Radio Astronomy has added greatly to our understanding of the structure and dynamics of the universe. The cosmic microwave background radiation, considered a relic of the explosion at the beginning of the universe some 18 billion years ago, is one of the most powerful aids in determining these features of the universe. This paper is about the discovery
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Cosmic Microwave Background

2016
The cosmic microwave background (CMB) is the third cornerstone of the Standard Model of cosmology, after Hubble’s Law and the primordial abundance of light elements. As the Universe expanded, at a certain point photons in the primordial plasma decoupled from protons and electrons and started freely propagating through the Universe.
Cosimo Bambi, Alexandre D. Dolgov
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The Cosmic Microwave Background

Classical and Quantum Gravity, 2009
With the successful launch of the European Space Agency's Planck satellite earlier this year the cosmic microwave background (CMB) is once again the centre of attention for cosmologists around the globe. Since its accidental discovery in 1964 by Arno Penzias and Robert Wilson, this relic of the Big Bang has been subjected to intense scrutiny by ...
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Cosmic Microwave Background

2017
The standard hot big bang model predicts that today the universe has a temperature of a few Kelvin [1]. In 1964, a background signal was discovered and found consistent with a black-body spectrum at the temperature of about 3 K [2], which was soon recognized as radiation from the primordial universe [3].
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Cosmic Microwave Background

1999
This chapter describes the origin and characteristics of the Cosmic Microwave Background radiation, the source of most of the millimeter wave photons in the universe. The measurements from the COBE satellite of the temperature and morphology of the CMB on large angular scales are summarized.
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