Cold dark matter confronts the cosmic microwave background - Large-angular-scale anisotropies in Omega0 + lambda 1 models

Mathematics – Logic

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Anisotropy, Astronomical Models, Background Radiation, Dark Matter, Microwaves, Relic Radiation, Correlation, Cosmology, Gravitational Fields, Hubble Constant, Space-Time Functions

Scientific paper

A new technique is used to compute the correlation function for large-angle cosmic microwave background anisotropies resulting from both the space and time variations in the gravitational potential in flat, vacuum-dominated, cold dark matter cosmological models. Such models with Omega0 of about 0.2, fit the excess power, relative to the standard cold dark matter model, observed in the large-scale galaxy distribution and allow a high value for the Hubble constant. The low order multipoles and quadrupole anisotropy that are potentially observable by COBE and other ongoing experiments should definitively test these models.

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