Do gamma-ray burst measurements provide a useful test of cosmological models?

  title={Do gamma-ray burst measurements provide a useful test of cosmological models?},
  author={Narayan Khadka and Orlando Luongo and Marco Muccino and Bharat Ratra},
  journal={Journal of Cosmology and Astroparticle Physics},
We study eight different gamma-ray burst (GRB) data sets to examine whether current GRB measurements — that probe a largely unexplored part of cosmological redshift (z) space — can be used to reliably constrain cosmological model parameters. We use three Amati-correlation samples and five Combo-correlation samples to simultaneously derive correlation and cosmological model parameter constraints. The intrinsic dispersion of each GRB data set is taken as a goodness measurement. We examine the… Expand
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