Constraints on dark energy models including gamma ray bursts
作者： Hong Li , Meng Su , Zuhui Fan , Zigao Dai , Xinmin Zhang
DOI: 10.1016/J.PHYSLETB.2007.10.053
关键词:
摘要: Abstract In this Letter we analyze the constraints on property of dark energy from cosmological observations. Together with SNe Ia Gold sample, WMAP, SDSS and 2dFGRS data, include 69 long Gamma-Ray Bursts (GRBs) data in our study perform global fitting using Markov Chain Monte Carlo (MCMC) technique. Dark perturbations are explicitly considered. We pay particular attention to time evolution equation state parameterized as w DE = 0 + a ( 1 − ) scale factor universe, emphasizing complementarity high redshift GRBs other probes. It is found that become stringent by taking into account GRBs, especially for , which delineates energy.
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