ChJAA Vol 1, No 5 (2001) / Mao

On the Light Curves of GRB Afterglows

Ji-Rong Mao, Jian-Cheng Wang


We present gamma-ray burst afterglow light curves in X-ray, optical and radio bands for various distributions of accelerated electrons behind the shock. The effects of lateral expansion of the jet and of winds in typical Wolf-Rayet star on the evolution are discussed. The light curves in the radiative case decline more rapidly than those in the adiabatic case. Under the combined effect of jet expansion and wind environment, the light curves have the greatest deviation from those of the standard model. All these results refer to the relativistic phase.


gamma-rays: burst --- hydrodynamics --- radiation mechanisms: nonthermal

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