Inflation, large scale structure, and COBE

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Cosmic Background Explorer Satellite, Cosmology, Inflating, Universe, Astronomical Models, Dark Matter

Scientific paper

The predictions of the inflationary cosmology are compared with the expected sensitivity of the COBE satellite. It is noted that detection of large angle temperature fluctuations in the usual biased cold dark matter version of inflation requires COBE to reduce systematic errors to the level of the detector sensitivity. However, the difficulty the usual biased cold dark matter scenario has in fitting recent large scale structure observations leads us to consider a variety of possible modifications of inflation. These changes generally increase the amplitude of the temperature fluctuations to a more detectable level, although the amount of increase depends on the specific modification. Thus we would expect that COBE will easily see temperature fluctuations in a realistic model of large scale structure formation based on inflation.

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