Gamma rays bursts: a viable cosmological probe?

Abstract In this work, our focus is on exploring the potential of current GRB measurements to provide reliable constraints cosmological model parameters at high redshift. This work divided into two parts. First, we calibrate Amati relation in a model-independent way by using Hubble parameter obtained from differential ages galaxies. We further check if evolve with GRBs' redshift or not, data Old Astrophysical Objects. The results indicate that GRBs do seem second part, test different models calibrated constant and dynamical relation. Our present quality not good enough put tight parameters. Hence perform joint analysis combined Type Ia Supernovae (SNe) find can considerably enhance contrast solely relying GRBs.