Computer Science – Sound
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..may..l402w&link_type=abstract
American Physical Society, APS/AAPT Joint Meeting, May 2-5, 1996, abstract #L4.02
Computer Science
Sound
Scientific paper
The study of anisotropies in the Cosmic Microwave Background radiation is progressing at a phenomenal rate, both experimentally and theoretically. These anisotropies can teach us an enormous amount about the way that fluctuations were generated and the way they subsequently evolved into the large scale structures and galaxies which are observed today. In particular, on sub-degree scales the rich structure in the anisotropy spectrum is the consequence of gravity-driven acoustic oscillations occurring before the matter in the universe became neutral. The frozen-in phases of these sound waves imprint a dependence on many cosmological parameters (e.g. Ω_0, Ω_Λ, Ω_B, Ω_ν, h, n_e(z), n, T/S), that we should be able to extract with upcoming experiments. They also provide a probe of the model of structure formation. Among other things a high sensitivity measurement of the whole anisotropy spectrum would allow for a test of the inflationary paradigm and should provide a robust measure of the curvature of the universe.
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