Speaker
Description
Several correlations have been proposed as possible pseudo-redshift estimators. Among the most widely used are the Amati correlation, which relates the peak energy (Epeak) of the spectrum — when modeled by a Band function — to the isotropic energy; the Yonetoku correlation, which relates luminosity to the peak energy of the most intense episode of the burst; and the Guiriec correlation, which uses an Epeak–luminosity relation derived from a time-resolved spectral analysis within a multi-component scenario for the GRB prompt emission spectra. In this work, we present pseudo-redshift estimates obtained using these three correlations for a sample of bright bursts with reported redshifts, allowing for comparison. The results suggest that combining these methods could help constrain the inferred pseudo-redshift values.