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Compton dragged gamma-ray bursts: the spectrum

G. Ghisellini·D. Lazzati·A. Celotti·M. J. Rees
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Abstract

We calculate the spectrum resulting from the interaction of a fireball with ambient soft photons. These photons are assumed to be produced by the walls of a funnel in a massive star. By parameterizing the radial dependence of the funnel temperature we calculate the deceleration of the fireball self-consistently, taking into account the absorption of high energy gamma-rays due to interaction with the softer ambient photons. The resulting spectrum is peaked at energies in agreement with observations, has a nu^2 slope in the X-ray band and a steep power-law high energy tail.

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G. Ghisellini, D. Lazzati, A. Celotti, M. J. Rees. 2000-06-20. Compton dragged gamma-ray bursts: the spectrum. https://doi.org/10.1046/j.1365-8711.2000.03821.x

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