[Cosmo-torun] draft title/abstract for seminar

Boud Roukema boud w astro.uni.torun.pl
Śro, 4 Paź 2006, 13:51:59 CEST


witam cosmo-torun,

Andrzej Kus mi prosił zrobić seminarium poniedziałek 9.10.2006.

Jeśli ktoś chce sugerować poprawki, proszę mów.  Abstrakt jest raczej
długi, ale jest trudny zrobić krótkiejszy dla osoby nie znając
temat...

Oczywiście, będę też iść trochę na wyniki WMAP itd, ale nie widzę, 
że muszę to mówić w abstrakcie.

pozdr
boud




Title

2006 Nobel prize: Cosmological black body and density perturbations


Abstract

The standard hot big bang model became widely accepted as a serious
model in 1965 after the discovery of the 3 Kelvin primordial
background radiation (CMB), but it was still regarded sceptically by
many astronomers.  During the 1980s and early 1990s, the model's
prediction that the background radiation should have a nearly perfect
Planckian black body spectrum was only weakly tested. The other
untested prediction of the model was that the Universe is not
perfectly uniform, it needed density perturbations which could
gravitationally collapse to form clusters of galaxies and galaxies and
stars.  The COBE satellite, coordinated by Smoot, Mather and
Wilkinson, revealed that the CMB black body was more perfect than any
black body created artificially in Earth based laboratories.
Moreover, in its map of the CMB, it detected 0.001% fluctuations in
the temperature - revealing the density perturbations necessary to
form galaxies. These results spectacularly confirmed two of the basic
physical predictions of the hot big bang model.


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