ar X iv : 0 90 6 . 30 25 v 2 [ as tr o - ph . C O ] 1 9 Ju n 20 09 Cosmography by GRBs : Gamma Ray Bursts as possible distance indicators


A new method to constrain the cosmological equation of state is proposed by using combined samples of gamma-ray bursts (GRBs) and supernovae (SNeIa). The Chevallier-Polarski-Linder parameterization is adopted for the equation of state in order to find out a realistic approach to achieve the deceleration/acceleration transition phase of dark energy models… (More)


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