Open AccessA complete sample of long bright Swift gamma ray bursts
Author(s) -
G. Tagliaferri,
R. Salvaterra,
S. Campana,
S. Covino,
P. D’Avanzo,
D. Fugazza,
G. Ghirlanda,
G. Ghisellini,
A. Melandri,
Lara Nava,
B. Sbarufatti,
S. D. Vergani
Publication year - 2013
Publication title -
philosophical transactions of the royal society a mathematical physical and engineering sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.074
H-Index - 169
eISSN - 1471-2962
pISSN - 1364-503X
DOI - 10.1098/rsta.2012.0235
Subject(s) - gamma ray burst , astrophysics , physics , redshift , swift , luminosity function , luminosity , population , flux (metallurgy) , sample (material) , photon , cosmic ray , astronomy , optics , galaxy , demography , sociology , thermodynamics , materials science , metallurgy
Complete samples are the basis of any population study. To this end, we selected a complete subsample ofSwift 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.
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