Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas

Details Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas

2008-11-14

arxiv.org/abs/0811.2367v1

Astronomy and Astrophysics

Astrophysics

Latex file, 5 pages, 11 figures in eps format. For the proceedings of the conference Dark Energy and Dark Matter, 7-11 july 20

Scientific paper

We model the cosmic medium as the mixture of a generalized Chaplygin gas and a pressureless matter component. Within a neo-Newtonian approach we compute the matter power spectrum. The 2dFGRS data are used to discriminate between unified models of the dark sector and different models, for which there is separate dark matter, in addition to that accounted for by the generalized Chaplygin gas. Leaving the corresponding density parameters free, we find that the unified models are strongly disfavored. On the other hand, using unified model priors, the observational data are also well described, in particular for small and large values of the generalized Chaplygin gas parameter $\alpha$.

Affiliated with

Also associated with

No associations

Rating

Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-11611