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Título:
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GRB 021004 modelled by multiple energy injections
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Autores:
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Ugarte Postigo, A. de ;
Castro Tirado, A. J. ;
Gorosabel, J. ;
Jóhannesson, G. ;
Björnsson, G. ;
Gudmundsson, E. H. ;
Bremer, M. ;
Pak, S. ;
Tanvir, N. ;
Castro Cerón, J. M. ;
Guzyi, S. ;
Jelínek, M. ;
Klose, S. ;
Pérez Ramírez, D. ;
Aceituno, J. ;
Campo Bagatín, A. ;
Covino, S. ;
Cardiel López, Nicolás
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Tipo de documento:
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texto impreso
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Editorial:
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EDP Sciencies, 2005-12
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Materia = Ciencias: Física: Física atmosférica
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Tipo = Artículo
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Resumen:
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GRB 021004 is one of the best sampled gamma-ray bursts (GRB) to date, although the nature of its light curve is still being debated. Here we present 107 new optical, near-infrared (NIR) and millimetre observations, ranging from 2 h to more than a year after the burst. Fitting the multiband data to a model based on multiple energy injections suggests that at least 7 refreshed shocks took place during the evolution of the afterglow, implying a total energy release ( collimated within an angle of 1.degrees 8) of similar to 8 x 10(51) erg. Analysis of the late photometry reveals that the GRB 021004 host is a low extinction (A(V) similar to 0.1) starburst galaxy with M-B similar or equal to -22.0.
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En línea:
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https://eprints.ucm.es/id/eprint/29347/1/cardiel44libre.pdf
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