Constraints on the solid dark universe model

Details Constraints on the solid dark universe model Constraints on the solid dark universe model

2005-03-02

arxiv.org/abs/astro-ph/0503033v1

JCAP 0506:001,2005

Astronomy and Astrophysics

Astrophysics

10 pages

Scientific paper

10.1088/1475-7516/2005/06/001

If the dark energy is modelled as a relativistic elastic solid then the standard CDM and $\Lambda$CDM models, as well as lattice configurations of cosmic strings or domain walls, are points in the two-dimensional parameter space $(w,c_{\rm s}^2)$. We present a detailed analysis of the best fitting cosmological parameters in this model using data from a range of observations. We find that the $\chi^2$ is improved by $\sim 10$ by including the two parameters and that the $w=-1$ $\Lambda$CDM model is only the best fit to the data when a large number of different datasets are included. Using CMB observations alone we find that $w=-0.38\pm 0.16 $ and with the addition of Large-Scale Structure data $w=-0.62\pm 0.15 $ and $\log c_{\rm s}=-0.77\pm 0.28$. We conclude that the models based on topological defects provide a good fit to the current data, although $\Lambda$CDM cannot be ruled out.

Affiliated with

Also associated with

No associations

Rating

Constraints on the solid dark universe model 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 Constraints on the solid dark universe model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on the solid dark universe model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-284671