Constraints on<i>w</i><sub>0</sub>and<i>w</i><sub><i>a</i></sub>of dark energy from high-redshift gamma-ray bursts
Constraints on<i>w</i><sub>0</sub>and<i>w</i><sub><i>a</i></sub>of dark energy from high-redshift gamma-ray bursts
Abstract We extend the Hubble diagram up to z= 5.6 using 63 gamma-ray bursts (GRBs) via peak energy–peak luminosity relation (so-called Yonetoku relation), and obtain constraints on cosmological parameters including dynamical dark energy parametrized by P/ρ≡w(z) =w0+wa×z/(1 +z). It is found that the current GRB data are consistent with the …