Testing the $\Lambda$CDM model with gamma-ray bursts using a newly calibrated Combo correlation

Gamma-ray burst (GRB) correlations, once properly calibrated, are promising cosmic tools able to frame cosmological models. Here, the Combo correlation of GRBs is calibrated with a new method that combines type Ia supernovae (SNe Ia) and the Bézier-interpolated Hubble rate. The extracted bounds agree with the ΛCDM model, but far from being competitive with those obtained by other well-established cosmic probes.