GRB 021004 modelled by multiple energy injections

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dc.creatorPostigo, A. de Ugarte
dc.creatorCastro-Tirado, A. J.
dc.creatorGorosabel, J.
dc.creatorJóhannesson, G.
dc.creatorBjornsson, G.
dc.creatorGudmundsson, E. H.
dc.creatorBremer, M.
dc.creatorPak, S.
dc.creatorTanvir, N.
dc.creatorCerón, J. M. Castro
dc.creatorGuzyi, S.
dc.creatorJelínek, M.
dc.creatorKlose, S.
dc.creatorPérez-Ramírez, D.
dc.creatorAceituno, J.
dc.creatorBagatín, A. Campo
dc.creatorCovino, S.
dc.creatorCardiel, N.
dc.creatorFathkullin, T.
dc.creatorHenden, A. A.
dc.creatorHuferath, S.
dc.creatorKurata, Y.
dc.creatorMalesani, D.
dc.creatorMannucci, F.
dc.creatorRuiz-Lapuente, P.
dc.creatorSokolov, V.
dc.creatorThiele, U.
dc.creatorWisotzki, L.
dc.creatorAntonelli, L. A.
dc.creatorBartolini, C.
dc.creatorBoattini, A.
dc.creatorGuarnieri, A.
dc.creatorPiccioni, A.
dc.creatorPizzichini, G.
dc.creatordel Principe, M.
dc.creatordi Paola, A.
dc.creatorFugazza, D.
dc.creatorGhisellini, G.
dc.creatorHunt, L.
dc.creatorKonstantinova, T.
dc.creatorMasetti, N.
dc.creatorPalazzi, E.
dc.creatorPian, E.
dc.creatorStefanon, M.
dc.creatorTesta, V.
dc.creatorTristram, P. J.
dc.date2005-06-22
dc.date.accessioned2026-07-07T07:42:28Z
dc.date.available2026-07-07T07:42:28Z
dc.descriptionGRB 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 a large amount (107) of new optical, near-infrared (NIR) and millimetre observations, ranging from 2 hours 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 1.8 deg) of ~ 8x10^51 erg. Analysis of the late photometry reveals that the GRB 021004 host is a low extinction (Av ~ 0.1) starburst galaxy with M_B ~ -22.0.
dc.description9 pages, 5 figures, accepted for publication in A&Ax
dc.identifierhttps://arxiv.org/abs/astro-ph/0506544
dc.identifierhttp://arxiv.org/abs/astro-ph/0506544
dc.identifierAstron.Astrophys. 443 (2005) 841-849
dc.identifierdoi:10.1051/0004-6361:20052898
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/122458
dc.subjectAstrophysics
dc.titleGRB 021004 modelled by multiple energy injections
dc.typetext

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