The rapid decline of the prompt emission in Gamma-Ray Bursts

Many gamma ray bursts (GRBs) have been observed with the Burst-Alert and X-Ray telescopes of the SWIFT satellite. The successive `pulses' of these GRBs end with a fast decline and a fast spectral softening, until they are overtaken by another pulse, or the last pulse's decline is overtaken...

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Detalles Bibliográficos
Autores principales: Dado, Shlomo, Dar, Arnon, De Rújula, Alvaro
Lenguaje:eng
Publicado: 2007
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1086/587952
http://cds.cern.ch/record/1059401
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author Dado, Shlomo
Dar, Arnon
De Rújula, Alvaro
author_facet Dado, Shlomo
Dar, Arnon
De Rújula, Alvaro
author_sort Dado, Shlomo
collection CERN
description Many gamma ray bursts (GRBs) have been observed with the Burst-Alert and X-Ray telescopes of the SWIFT satellite. The successive `pulses' of these GRBs end with a fast decline and a fast spectral softening, until they are overtaken by another pulse, or the last pulse's decline is overtaken by a less rapidly-varying `afterglow'. The fast decline-phase has been attributed, in the standard fireball model of GRBs, to `high-latitude' synchrotron emission from a collision of two conical shells. This interpretation does not agree with the observed spectral softening. The temporal behaviour and the spectral evolution during the fast-decline phase agree with the predictions of the cannonball model of GRBs.
id cern-1059401
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10594012019-09-30T06:29:59Zdoi:10.1086/587952http://cds.cern.ch/record/1059401engDado, ShlomoDar, ArnonDe Rújula, AlvaroThe rapid decline of the prompt emission in Gamma-Ray BurstsAstrophysics and AstronomyMany gamma ray bursts (GRBs) have been observed with the Burst-Alert and X-Ray telescopes of the SWIFT satellite. The successive `pulses' of these GRBs end with a fast decline and a fast spectral softening, until they are overtaken by another pulse, or the last pulse's decline is overtaken by a less rapidly-varying `afterglow'. The fast decline-phase has been attributed, in the standard fireball model of GRBs, to `high-latitude' synchrotron emission from a collision of two conical shells. This interpretation does not agree with the observed spectral softening. The temporal behaviour and the spectral evolution during the fast-decline phase agree with the predictions of the cannonball model of GRBs.arXiv:0709.4307oai:cds.cern.ch:10594012007-09-28
spellingShingle Astrophysics and Astronomy
Dado, Shlomo
Dar, Arnon
De Rújula, Alvaro
The rapid decline of the prompt emission in Gamma-Ray Bursts
title The rapid decline of the prompt emission in Gamma-Ray Bursts
title_full The rapid decline of the prompt emission in Gamma-Ray Bursts
title_fullStr The rapid decline of the prompt emission in Gamma-Ray Bursts
title_full_unstemmed The rapid decline of the prompt emission in Gamma-Ray Bursts
title_short The rapid decline of the prompt emission in Gamma-Ray Bursts
title_sort rapid decline of the prompt emission in gamma-ray bursts
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1086/587952
http://cds.cern.ch/record/1059401
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