Favored Variants of Cold Dark Matter Cosmologies

Details Favored Variants of Cold Dark Matter Cosmologies Favored Variants of Cold Dark Matter Cosmologies

1996-12-16

arxiv.org/abs/astro-ph/9612156v1

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures, Latex, uses psfig, to appear in the proceedings of ``Identification of Dark Matter'', University of Sheff

Scientific paper

We discuss variants of Cold Dark Matter (CDM) dominated cosmological models that give good agreement with a range of observations. We consider models with hot dark matter, tilt, $\Omega < 1$, or a cosmological constant. We also discuss the sensitivity of the results to other parameters, such as the Hubble parameter and the baryon fraction. We obtain constraints by combining the COBE data, cluster abundances, abundance of damped Lyman-$\alpha$ systems at $z\sim3$, the small-angle Cosmic Microwave Background anisotropy, and the small-scale non-linear power spectrum. We present non-linear power spectra from a new suite of N-body simulations for the ``best-bet'' models from each category.

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