Cosmic-structure constraints from a one-degree microwave-background anisotropy experiment

Details Cosmic-structure constraints from a one-degree microwave-background anisotropy experiment Cosmic-structure constraints from a one-degree microwave-background anisotropy experiment

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..66.2179b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 66, April 29, 1991, p. 2179-2182. Research supported by University of California.

Physics

86

Bayes Theorem, Cosmology, Dark Matter, Microwaves, Perturbation Theory, Adiabatic Conditions, Constraints

Scientific paper

A recent anisotropy experiment with a 30-arcmin beam is close to optimal for testing models in which cosmic structure arose from inflation-generated Gaussian density perturbations. Using a Bayesian analysis to constrain the amplitude of the perturbation spectrum, it is shown that adiabatic hot-dark-matter models are convincingly ruled out and cold-dark-matter models have anisotropies near the derived limits. Theories with broken scale invariance such as isocurvature baryon models are strongly constrained, as are models with extra power crafted to give significant large-scale structures and flows.

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