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Fig. 3


Top panel: GRB duration T90 vs. afterglow peak time tp. GRBs with measured tp are shown with red circles (green stars for LAT bursts). Upper limits on tp are shown by the black arrows (green arrows for LAT GRBs). Bottom panel: time of the peak of the prompt emission light curve Tp vs. tp. Same symbols and colours as in the top panel. In both panels the equality is shown by the dashed line and the short GRB 090510 is shown by the green square.

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