Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-03-23
Int.J.Mod.Phys.D16:1229-1242,2007
Astronomy and Astrophysics
Astrophysics
7 pages, 5 figures Revtex4
Scientific paper
10.1142/S0218271807010717
Using the Markov chain Monte Carlo (MCMC) method we perform a global analysis constraining the dynamics of dark energy in light of the supernova (Riess "Gold" samples), galaxy clustering (SDSS 3D power spectra and SDSS lyman-\alpha forest information) and the latest three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations. We have allowed the dark energy equation of state to get across -1 and pay particular attention to the effects when incorrectly neglecting dark energy perturbations. We find the parameter space of dynamical dark energy is now well constrained and neglecting dark energy perturbations will make the parameter space significantly smaller. Dynamical dark energy model where the equation of state crosses -1 is mildly favored and the standard \LambdaCDM model is still a good fit to the current data.
Feng Bo
Xia Jun-Qing
Zhang Xinmin
Zhao Gong-Bo
No associations
LandOfFree
Probing Dynamics of Dark Energy with Supernova, Galaxy Clustering and the Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations 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 Probing Dynamics of Dark Energy with Supernova, Galaxy Clustering and the Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing Dynamics of Dark Energy with Supernova, Galaxy Clustering and the Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-305167