Sy. Sazonov et al., GRANAT WATCH CATALOG OF COSMIC GAMMA-RAY BURSTS - DECEMBER 1989 TO SEPTEMBER 1994/, Astronomy & Astrophysics. Supplement series, 129(1), 1998, pp. 1-8
We present the catalogue of gamma-ray bursts (GRB) observed with the W
ATCH all-sky monitor on board the GRANAT satellite during the period D
ecember 1989 to September 1994. The cosmic origin of 95 bursts compris
ing the catalogue is confirmed either bg their localization with WATCH
or by their detection with other GRB experiments. For each burst its
time history and information on its intensity in the two energy ranges
8-20 keV and 30-60 keV are presented, Most events show hardening of t
he energy spectrum near the burst peak. In part of the bursts an X-ray
precursor or a tail is seen at 8-20 keV. We have determined the celes
tial positions of the sources of 47 bursts. Their localization regions
(at 3 sigma confidence level) are equivalent in area to circles with
radii ranging from 0.2 to 1.6 deg. The burst sources appear isotropica
lly distributed on the sky on large angular scales.