Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-03-25
Astronomy and Astrophysics
Astrophysics
4 pages, 1 figure, Latex (macro sprocl) Texas Meeting on Relativistic Astrophysics Dec 1996, Ed. Olinta et al
Scientific paper
This is a very exciting time for the CMB field. It is widely recognized that precision measurements of the CMB can provide a definitive test of cosmological models and determine their parameters accurately. At present observations give us the first rough results but ongoing experiments promise new and improved results soon and eventually satellite missions (MAP and COBRAS/SAMBA now named Planck) are expected to provide the requisite precision measurements. Other areas such as observations of the spectrum and Sunyaev-Zeldovich effect are also making significant progress. There has long been anticipation that cosmic microwave background (CMB) radiation would provide significant information about the early Universe due to its early central role and its general lack of interaction in the later epochs. Though there have been many observations of the CMB since its discovery by Penzias and Wilson in 1964, the Cosmic Background Explorer satellite, COBE, provided two watershed observations: (1) the CMB is extremely well described by a black-body spectrum and (2) the discovery of a spectrum of CMB anisotropies.
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