An Empirical Approach to Cosmological Structure Formation

Details An Empirical Approach to Cosmological Structure Formation An Empirical Approach to Cosmological Structure Formation

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...19310902g&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #109.02; Bulletin of the American Astronomical Society, Vol. 30, p.1417

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Observational advances in Cosmic Microwave Background anisotropy and large-scale structure support the claim that key cosmological parameters can be measured to a precision of a few percent in the next decade, but this assumes that adiabatic inflationary cold dark matter models are correct. I advocate a more empirical approach in which current observations are analyzed to determine if our paradigms for structure formation (nearly scale-invariant, gaussian, adiabatic density fluctuations and cold dark matter) are justified. The data are already good enough to constrain the primordial power spectrum and the gaussianity of the initial fluctuations. I will show these results, which represent a powerful test of the inflationary universe paradigm.

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