Constraints on Dark Energy Models Including Gamma Ray Bursts

Details Constraints on Dark Energy Models Including Gamma Ray Bursts Constraints on Dark Energy Models Including Gamma Ray Bursts

2006-12-03

arxiv.org/abs/astro-ph/0612060v3

Phys.Lett.B658:95-100,2008

Astronomy and Astrophysics

Astrophysics

7 pages and 3 figures. Replaced with version accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2007.10.053

In this paper we analyze the constraints on the property of dark energy from cosmological observations. Together with SNe Ia Gold sample, WMAP, SDSS and 2dFGRS data, we include 69 long Gamma-Ray Bursts (GRBs) data in our study and perform global fitting using Markov Chain Monte Carlo (MCMC) technique. Dark energy perturbations are explicitly considered. We pay particular attention to the time evolution of the equation of state of dark energy parameterized as $w_{DE}=w_0+w_a(1-a)$ with $a$ the scale factor of the universe, emphasizing the complementarity of high redshift GRBs to other cosmological probes. It is found that the constraints on dark energy become stringent by taking into account high redshift GRBs, especially for $w_a$, which delineates the evolution of dark energy.

Affiliated with

Also associated with

No associations

Rating

Constraints on Dark Energy Models Including Gamma Ray Bursts 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 Dark Energy Models Including Gamma Ray Bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on Dark Energy Models Including Gamma Ray Bursts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-358840