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 parametrizing 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 arising from interactions with the softer ambient photons. The resulting spectrum is peaked at energies that are in agreement with observations, has a nu(2) slope in the X-ray band and a steep power law high energy tail.

Compton dragged gamma-ray bursts: the spectrum / Ghisellini, G.; Lazzati, D.; Celotti, Anna Lisa; Rees, M. J.. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - 316:4(2000), pp. L45-L49. [10.1046/j.1365-8711.2000.03821.x]

Compton dragged gamma-ray bursts: the spectrum

Celotti, Anna Lisa;
2000-01-01

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 parametrizing 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 arising from interactions with the softer ambient photons. The resulting spectrum is peaked at energies that are in agreement with observations, has a nu(2) slope in the X-ray band and a steep power law high energy tail.
2000
316
4
L45
L49
Ghisellini, G.; Lazzati, D.; Celotti, Anna Lisa; Rees, M. J.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/13078
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