Constraining dark energy with gamma-ray bursts

Understand

We use the measurement of gamma-ray burst (GRB) distances to constrain dark energy cosmological model parameters.

• We employ two methods for analyzing GRB data - fitting luminosity relation of GRBs in each cosmology and using distance measures computed from binned GRB data.
• Current GRB data alone cannot tightly constrain cosmological parameters and allow for a wide range of dark energy models.