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The long gamma-ray burst GRB 060714 was observed to exhibit a series of fiveX-ray flares beginning ~70 s after the burst trigger T0 and continuing until T0+ ~200 s. The first two flares were detected by the Burst Alert Telescope (BAT)on the Swift satellite, before Swift had slewed to the burst location, whilethe last three flares were strongly detected by the X-Ray Telescope (XRT) butonly weakly detected by the BAT. This burst provides an unusual opportunity totrack a complete sequence of flares over a wide energy range. The flares werevery similar in their light curve morphology, showing power-law rise and fallcomponents, and in most cases significant sub-structure. The flares also showedstrong evolution with time, both spectrally and temporally. The small timescale and large amplitude variability observed are incompatible with anexternal shock origin for the flares, and support instead late time sporadicactivity either of the central source or of localized dissipation events withinthe outflow. We show that the flares in GRB 060714 cannot be the result ofinternal shocks in which the contrast in the Lorentz factor of the collidingshells is very small, and that this mechanism faces serious difficulties inmost Swift GRBs. The morphological similarity of the flares and the promptemission and the gradual and continual evolution of the flares with time makesit difficult and arbitrary to draw a dividing line between the prompt emissionand the flares.Comment: Submitted to Ap

GRB 060714: No Clear Dividing Line between Prompt Emission and X‐Ray Flares