The GRBs Hubble diagram in quintessential cosmological models

Understand

It has been recently empirically established that some of the directly observed pa- rameters of GRBs are correlated with their important intrinsic parameters, like the luminosity or the total radiated energy.

• These correlations were derived, tested and used to standardize GRBs, i.e., to derive their luminosity or radiated energy from one or more observables, in order to construct an estimated fiducial Hubble diagram, assuming that radiation propagates in the standard LambdaCDM cosmological model.
• We extend these analyses by considering more general models of dark energy, and an updated data set of high redshift GRBs.
• We show that the correlation parameters only weakly depend on the cosmological model.