Cold Dark Matter Resuscitated?

Details Cold Dark Matter Resuscitated? Cold Dark Matter Resuscitated?

1995-08-02

arxiv.org/abs/astro-ph/9508009v2

Mon.Not.Roy.Astron.Soc.276:L69-L75,1995

Astronomy and Astrophysics

Astrophysics

6 pages, self-unpacking uuencoded compressed postscript, with 4 included figures, to appear in MNRAS. References added and Fig

Scientific paper

The Cold Dark Matter (CDM) model has an elegant simplicitly which makes it very predictive, but when its parameters are fixed at their `canonical' values its predictions are in conflict with observational data. There is, however, much leeway in the initial conditions within the CDM framework. We advocate a re-examination of the CDM model, taking into account modest variation of parameters from their canonical values. We find that CDM models with $n=0.8$--0.9 and $h=0.45$--0.50 can fit the available data. Our ``best fit'' CDM model has $n=0.9$, $h=0.45$ and $C_2^{T}/C_2^{S}=0.7$. We discuss the current state of observations which could definitely rule out this model.

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