Optical and NIR observations of the afterglow of GRB020813

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dc.contributor.authorCovino, S
dc.contributor.authorMalesani, D
dc.contributor.authorTavecchio, F
dc.contributor.authorAntonelli, LA
dc.contributor.authorArkharov, A
dc.contributor.authorDi Paola, A
dc.contributor.authorFugazza, D
dc.contributor.authorGhisellini, G
dc.contributor.authorLarionov, V
dc.contributor.authorLazzati, D
dc.contributor.authorMannucci, F
dc.contributor.authorMasetti, N
dc.contributor.authorBarrena, R
dc.contributor.authorBenetti, S
dc.contributor.authorCastro-Tirado, AJ
dc.contributor.authorAlighieri, SD
dc.contributor.authorFiore, F
dc.contributor.authorFrontera, F
dc.contributor.authorFruchter, A
dc.contributor.authorGhinassi, F
dc.contributor.authorGladders, M
dc.contributor.authorHall, PB
dc.contributor.authorIsrael, GL
dc.contributor.authorKlose, S
dc.contributor.authorMagazzù, A
dc.contributor.authorPalazzi, E
dc.contributor.authorPedani, M
dc.contributor.authorPian, E
dc.contributor.authorRomano, P
dc.contributor.authorStefanon, M
dc.contributor.authorStella, L
dc.date.accessioned2025-01-21T01:09:19Z
dc.date.available2025-01-21T01:09:19Z
dc.date.issued2003
dc.description.abstractWe present optical and near-infrared (NIR) photometry of the bright afterglow of GRB020813. Our data span from 3 hours to 4 days after the GRB event. A rather sharp achromatic break is present in the light curve, 14 hours after the trigger. In the framework of jetted fireballs, this break corresponds to a jet half-opening angle of 1.9degrees +/- 0.2degrees, the smallest value ever inferred for a GRB. We discuss our results in the framework of currently available models, and find that they have problems in explaining the joint temporal and spectral properties, and in particular the slow decay before the break.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:20030525
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20030525
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96569
dc.identifier.wosidWOS:000183081300002
dc.issue.numero1
dc.language.isoen
dc.pagina.finalL9
dc.pagina.inicioL5
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgamma rays : bursts
dc.subjectradiation mechanisms : non-thermal
dc.titleOptical and NIR observations of the afterglow of GRB020813
dc.typeartículo
dc.volumen404
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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