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Possible Geometries for Afterglow of GRB990705

  • X. Y. Wang (a1), Z. G. Dai (a1) and T. Lu (a1)

Abstract

We investigate whether the circum-burst environment constrained by the absorption feature of GRB990705 could be consistent with the observed H-band afterglow. Two possible geometries of the afterglow-emitting regions are suggested: 1) afterglow emission produced by the impact of the fireball on the surrounding torus; 2)afterglow emission produced in the dense circum-burst medium inside the torus. In case 1), the faster decay at later time is attributed to the disappearance of the shock due to the counter-pressure in the hot torus illuminated by the burst and afterglow photons. For case 2), the circum-burst medium density is found to be very high (n ≳ 104 − 105cm−3).

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References

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Amati, L., Frontera, F., Vietri, M. et al. 2000, Science, 290, 953
Frail, D. A., Kulkarni, S. R., Sari, R. et al. 2001, ApJ, 562, L55
Lazzati, D., Ghisellini, G., Amati, L. et al. 2001, ApJ, 556, 471
Paerels, F., Kuulkers, E., Heise, J., & Liedahl, D. A. 2000, ApJ, 535, L25
Vietri, M. & Stella, L. 1998, ApJ, 507, L45
Vietri, M., Perola, G. C., Piro, L., & Stella, L. 1999, MNRAS, 308, L29.
Wang, X. Y. Dai, Z. G., Lu, T. et al. 2000, A&A, 357, 543

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