Is the afterglow of Gamma Ray Burst 021004 unusual?

The bumpy light-curve of the bright optical afterglow (AG) of gamma ray burst (GRB) 021004, its spectral evolution and its radio emission have been claimed to be unusual. In the Cannonball Model of GRBs that is not the case. The very early AG's shape is, as for GRB 990123, a direct tracer of th...

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Detalles Bibliográficos
Autores principales: Dado, Shlomo, Dar, Arnon, De Rujula, Alvaro
Lenguaje:eng
Publicado: 2002
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1086/374237
http://cds.cern.ch/record/591133
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author Dado, Shlomo
Dar, Arnon
De Rujula, Alvaro
author_facet Dado, Shlomo
Dar, Arnon
De Rujula, Alvaro
author_sort Dado, Shlomo
collection CERN
description The bumpy light-curve of the bright optical afterglow (AG) of gamma ray burst (GRB) 021004, its spectral evolution and its radio emission have been claimed to be unusual. In the Cannonball Model of GRBs that is not the case. The very early AG's shape is, as for GRB 990123, a direct tracer of the expected circumburst density profile. The unprecedented precision of the data allows for the ``resolution'' of two cannonballs (CBs) in the AG. These two CBs correspond to the two pulses in the GRB and to the two wide humps in the AG light curve. The smaller wiggles in the AG are, as for GRBs 000301c and 970508, to be expected: they trace moderate deviations from a constant density interstellar medium. The observed evolution of the optical spectrum is that predicted in the CB model. The X-ray and radio emissions of GRB 021004 are also normal.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5911332023-03-14T20:02:50Zdoi:10.1086/374237http://cds.cern.ch/record/591133engDado, ShlomoDar, ArnonDe Rujula, AlvaroIs the afterglow of Gamma Ray Burst 021004 unusual?Astrophysics and AstronomyThe bumpy light-curve of the bright optical afterglow (AG) of gamma ray burst (GRB) 021004, its spectral evolution and its radio emission have been claimed to be unusual. In the Cannonball Model of GRBs that is not the case. The very early AG's shape is, as for GRB 990123, a direct tracer of the expected circumburst density profile. The unprecedented precision of the data allows for the ``resolution'' of two cannonballs (CBs) in the AG. These two CBs correspond to the two pulses in the GRB and to the two wide humps in the AG light curve. The smaller wiggles in the AG are, as for GRBs 000301c and 970508, to be expected: they trace moderate deviations from a constant density interstellar medium. The observed evolution of the optical spectrum is that predicted in the CB model. The X-ray and radio emissions of GRB 021004 are also normal.The bumpy light-curve of the bright optical afterglow (AG) of gamma ray burst (GRB) 021004, its spectral evolution and its radio emission have been claimed to be unusual. In the Cannonball Model of GRBs that is not the case. The very early AG's shape is, as for GRB 990123, a direct tracer of the expected circumburst density profile. The unprecedented precision of the data allows for the ``resolution'' of two cannonballs (CBs) in the AG. These two CBs correspond to the two pulses in the GRB and to the two wide humps in the AG light curve. The smaller wiggles in the AG are, as for GRBs 000301c and 970508, to be expected: they trace moderate deviations from a constant density interstellar medium. The observed evolution of the optical spectrum is that predicted in the CB model. The X-ray and radio emissions of GRB 021004 are also normal.astro-ph/0211224CERN-TH-2002-365oai:cds.cern.ch:5911332002-11-11
spellingShingle Astrophysics and Astronomy
Dado, Shlomo
Dar, Arnon
De Rujula, Alvaro
Is the afterglow of Gamma Ray Burst 021004 unusual?
title Is the afterglow of Gamma Ray Burst 021004 unusual?
title_full Is the afterglow of Gamma Ray Burst 021004 unusual?
title_fullStr Is the afterglow of Gamma Ray Burst 021004 unusual?
title_full_unstemmed Is the afterglow of Gamma Ray Burst 021004 unusual?
title_short Is the afterglow of Gamma Ray Burst 021004 unusual?
title_sort is the afterglow of gamma ray burst 021004 unusual?
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1086/374237
http://cds.cern.ch/record/591133
work_keys_str_mv AT dadoshlomo istheafterglowofgammarayburst021004unusual
AT dararnon istheafterglowofgammarayburst021004unusual
AT derujulaalvaro istheafterglowofgammarayburst021004unusual

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