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Fig. 15

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Effect of the duration of the ejection. The peak energy at the maximum of the pulse (top panel), the difference between the time of maximum in BATSE channel 3 and 1 (second panel), the index of the power law giving the evolution of the pulse width with energy a = − dlnW/ dlnE (third panel), the ratio of the rise and decay time of the pulse in BATSE channel 2+3 (fourth panel), and the hardness ratio H32 (ratio of the photon fluence in BATSE channel 3 over the photon fluence in BATSE channel 2) are plotted as a function of the duration T90 in BATSE channel 2+3 for Case A with a constant (blue) or varying (cyan) ζ , and Case B with a constant (red) or varying (magenta) ζ, with p = 2.7 in all cases. The other model parameters are constant and equal the values given in Table 1, except for the duration of the ejection tw, which is varied from 2 ms to 200 s.

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