A Complete Sample of Long Bright Swift GRBs

TL;DR

This paper presents a complete, well-defined sample of 58 bright long GRBs from Swift, enabling detailed analysis of their properties, evolution, and correlations, with most having measured redshifts.

Contribution

It introduces the BAT6 sample, a complete subset of bright long GRBs, to systematically study their luminosity function, spectral-energy relations, and other characteristics.

Findings

High redshift completeness (95%) in the sample

Insights into GRB luminosity function and spectral-energy correlations

Analysis of dark bursts and dust extinction effects

Abstract

Starting from the Swift sample we define a complete sub-sample of 58 bright long Gamma Ray Bursts (GRB), 55 of them (95%) with a redshift determination, in order to characterize their properties. Our sample (BAT6) allows us to study the properties of the long GRB population and their evolution with cosmic time. We focus in particular on the GRB luminosity function, on the spectral-energy correlations of their prompt emission, on the nature of dark bursts, on possible correlations between the prompt and the X-ray afterglow properties, and on the dust extinction.