Confronting the Hubble Diagram of Gamma-Ray Bursts with Cardassian Cosmology

Understand

We construct the Hubble diagram (HD) of Gamma-Ray Bursts (GRBs) with redshifts reaching up to $z \sim 6$, by using five luminosity vs.

• luminosity indicator relations calibrated with the Cardassian cosmology.
• This model has a major interesting feature: despite of being matter-dominated and flat, it can explain the present accelerate expansion of the universe.
• This is the first study of this class of models using high redshift GRBs.