Results 101 to 110 of about 43,542 (117)

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 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.
David R. Wilkinson, Lyman A. Page
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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, Alexandre D. Dolgov   +2 more
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The Cosmic Microwave Background

2010
The Cosmic Microwave Background (CMB) is one of the pillars on which the Big Bang theory relies. High-quality maps of this radiation strongly constrain the history of the Universe and its content. Such maps require accurate and sensitive measurements of tiny random features on a strong uniform background.
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The Cosmic Microwave Background

2020
In this chapter the description of the early universe to cover the first several hundred thousand years of its existence will be presented. This leads to one of the most important pillars of the Big Bang model: the cosmic microwave background radiation or CMB. It will be seen how and when the CMB was formed and what its properties are.
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Cosmic texture and the microwave background

Physical Review D, 1987
The isotropic cosmic microwave background may come from the antipode of a spatially closed, but
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The cosmic microwave background

1996
I briefly recall the main properties of the Cosmic Microwave Background. In this very short presentation, I do not go into the details which may be found in the recent and excellent review papers by White, Scott & Silk (1994) and Bond (1995). At the light of the most recent observational results, the CMB appears to confirm very well the big bang models.
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The Cosmic Microwave Background

1980
If the interpretation which the majority of astronomers give to the 3 K cosmic background radiation is actually right, this radiation constitutes the second phenomenon of primary importance to cosmology, after the expansion of the universe. In effect, it proves that our universe has known an extremely condensed state in the past, emerging abruptly from
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The Cosmic Microwave Background [PDF]

, 2014
After Einstein published his general theory of relativity in 1916, it was not long before theoreticians used his equations to calculate how they applied to the Universe as a whole. Alexander Friedmann in 1923 and Georges Lemaitre in 1927 independently found that one possible solution is that the Universe could be expanding, Lemaitre even calculated an ...
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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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