title: A complete sample of long bright Swift gamma ray bursts.
abstract: Complete samples are the basis of any population study. To this end, we selected a complete subsample of Swift long bright gamma ray bursts (GRBs). The sample, made up of 58 bursts, was selected by considering bursts with favourable observing conditions for ground-based follow-up observations and with the 15-150 keV 1 s peak flux above a flux threshold of 2.6 photons cm(-2) s(-1). This sample has a redshift completeness level higher than 90 per cent. Using this complete sample, we investigate the properties of long GRBs and their evolution with cosmic time, focusing in particular on the GRB luminosity function, the prompt emission spectral-energy correlations and the nature of dark bursts.
authors: INAF-OABr, Via Bianchi 46, 23807 Merate, Italy. gianpiero.tagliaferri@brera.inaf.it
authors: Gianpiero
authors: G
authors: Tagliaferri
authors: Ruben
authors: R
authors: Salvaterra
authors: Sergio
authors: S
authors: Campana
authors: Stefano
authors: S
authors: Covino
authors: Paolo
authors: P
authors: D'Avanzo
authors: Dino
authors: D
authors: Fugazza
authors: Giancarlo
authors: G
authors: Ghirlanda
authors: Gabriele
authors: G
authors: Ghisellini
authors: Andrea
authors: A
authors: Melandri
authors: Lara
authors: L
authors: Nava
authors: Boris
authors: B
authors: Sbarufatti
authors: Susanna
authors: S
authors: Vergani