The CMBR and the Seeds of Galaxies

Details The CMBR and the Seeds of Galaxies The CMBR and the Seeds of Galaxies

1997-11-19

arxiv.org/abs/astro-ph/9711220v1

Astronomy and Astrophysics

Astrophysics

presented at the Origins Conference, Estes Park CO, May 1997. 19 pages with 7 included figures

Scientific paper

The Cosmic Microwave Background Radiation (CMBR) is the radiation left over from the hot Big Bang. Its blackbody spectrum and small anisotropy provide clues about the origin and early evolution of the Universe. In particular, the spectrum of the CMBR rules out many non-gravitational models of structure formation, and the anisotropy of the CMBR provides a measure of the gravitational potential at the time of last scattering, about 300,000 years after the Big Bang. The density inhomogeneities needed to produce the gravitational potential perturbations traced by the CMBR have grown to become the galaxies, clusters of galaxies, and superclusters that we see today.

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