Fig. A.2
Isotropic peak luminosity as a function of spectral lag between BAT channels 3 (50–100 keV) and 1 (15–25 keV). The image is adapted from Ukwatta et al. (2010) and GRBs are marked in red. The dotted lines indicate the estimated 1σ confidence level. We marked in blue the position of GRB 050219A at different redshifts, including the redshift of the bright galaxy at z = 0.211 (bigger blue dot).
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