GRB 040403: a faint X-ray rich Gamma-ray Burst discovered by INTEGRAL

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dc.creatorMereghetti, S.
dc.creatorGotz, D.
dc.creatorAndersen, M. I.
dc.creatorCastro-Tirado, A.
dc.creatorFrontera, F.
dc.creatorGorosabel, J.
dc.creatorHartmann, D. H.
dc.creatorHjorth, J.
dc.creatorHudec, R.
dc.creatorHurley, K.
dc.creatorPizzichini, G.
dc.creatorProduit, N.
dc.creatorTarana, A.
dc.creatorTopinka, M.
dc.creatorUbertini, P.
dc.creatorde Ugarte, A.
dc.date2004-12-01
dc.date.accessioned2026-07-07T02:16:06Z
dc.date.available2026-07-07T02:16:06Z
dc.descriptionGRB 040403 is one of the faintest gamma-ray bursts for which a rapid and accurate localization has been obtained. Here we report on the gamma-ray properties of this burst, based on observations with the IBIS instrument aboard INTEGRAL, and the results of searches for its optical afterglow. The steep spectrum (power law photon index = 1.9 in the 20-200 keV range) implies that GRB 040403 is most likely an X-ray rich burst. Our optical limit of R > 24.2 at 16.5 hours after the burst, indicates a rather faint afterglow, similar to those seen in other relatively soft and faint bursts.
dc.description5 pages, 3 figures, accepted for publication in Astronomy and Astrophysics Letters
dc.identifierhttps://arxiv.org/abs/astro-ph/0412012
dc.identifierhttp://arxiv.org/abs/astro-ph/0412012
dc.identifierAstron.Astrophys. 433 (2005) 113-116
dc.identifierdoi:10.1051/0004-6361:20042030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8662
dc.subjectAstrophysics
dc.titleGRB 040403: a faint X-ray rich Gamma-ray Burst discovered by INTEGRAL
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