From Microwave Anisotropies to Cosmology

Details From Microwave Anisotropies to Cosmology From Microwave Anisotropies to Cosmology

1995-05-04

arxiv.org/abs/astro-ph/9505015v1

Science 268:829-835,1995

Astronomy and Astrophysics

Astrophysics

9 pages plus 2 colour figures in a uuencoded self-unpacking shell script. To appear in the May 12th issue of Science. Also ava

Scientific paper

10.1126/science.268.5212.829

Fluctuations in the temperature of the cosmic microwave background have now been detected over a wide range of angular scales, and a consistent picture seems to be emerging. This article describes some of the implications for cosmology. Analysis of all the published detections suggests the existence of a peak on degree scales of height 2.4 to 10 (90%CL) relative to the amplitude of the power spectrum at large angular scales. This result confirms an early prediction, implies that the universe did in fact recombine, and limits theories of structure formation. Illustrative examples are provided of how the comparison of microwave background and large-scale structure data will be a potentially powerful means of answering fundamental questions about the universe.

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