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Fig. 7.

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Rest-frame energetics of GRB 210905A in the Epeak, z − Eiso and Epeak, z − Liso planes (red stars). Brown stars in the left panel show the values derived for the individual Pulses 1, 2, and 3. The rest-frame parameters of 315 long KW GRBs with known redshifts (Tsvetkova et al. 2021) are shown with circles; the colour of each data point represents the burst’s redshift. In the left plot, rest-frame peak energy values are derived from time-averaged spectral fits (Ep, i, z). In the right plot, they are derived from spectra, corresponding to the burst’s peak count rate (Ep, p, z). The ‘Amati’ and ‘Yonetoku’ relations for this sample are plotted with dashed lines and the dark- and light-grey shaded areas show their 68% and 90% prediction intervals, respectively. The error bars are not shown here for reasons of clarity.

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