Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts

Simple item page
dc.creatorAmati, L.
dc.creatorFrontera, F.
dc.creatorTavani, M.
dc.creatorZand, J. J. M. in 't
dc.creatorAntonelli, A.
dc.creatorCosta, E.
dc.creatorFeroci, M.
dc.creatorGuidorzi, C.
dc.creatorHeise, J.
dc.creatorMasetti, N.
dc.creatorMontanari, E.
dc.creatorNicastro, L.
dc.creatorPalazzi, E.
dc.creatorPian, E.
dc.creatorPiro, L.
dc.creatorSoffitta, P.
dc.date2002-05-15
dc.date.accessioned2026-07-07T10:47:24Z
dc.date.available2026-07-07T10:47:24Z
dc.descriptionWe present the main results of a study of spectral and energetics properties of twelve gamma-ray bursts (GRBs) with redshift estimates. All GRBs in our sample were detected by BeppoSAX in a broad energy range (2-700 keV). From the redshift estimates and the good-quality BeppoSAX time-integrated spectra we deduce the main properties of GRBs in their cosmological rest frames. All spectra in our sample are satisfactorily represented by the Band model with no significant soft X-ray excesses or spectral absorptions. We find a positive correlation between the estimated total (isotropic) energies in the 1-10000 keV energy range (E_rad) and redshifts z. Interestingly, more luminous GRBs are characterized also by larger peak energies E_p of their EF(E) spectra. Furthermore, more distant GRBs appear to be systematically harder in the X-ray band compared to GRBs with lower redshifts. We discuss how selection and data truncation effects could bias our results and give possible explanations for the correlations that we found.
dc.description10 pages, 5 figures, accepted for publication in Astronomy & Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/0205230
dc.identifierhttp://arxiv.org/abs/astro-ph/0205230
dc.identifierAstron.Astrophys.390:81,2002
dc.identifierdoi:10.1051/0004-6361:20020722
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183525
dc.subjectAstrophysics
dc.titleIntrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts
dc.typetext

Files

Collections

arXiv