J/A+A/438/1175ivo://CDS.VizieR/J/A+A/438/1175doi:10.26093/cds/vizier.34381175CDSRau A.Kienlin A. vonHurley K.Lichti G.G.2006-06-08T14:18:10Z2006-06-08T14:16:17ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgamma-ray-astronomyWe present the sample of gamma-ray bursts detected with the anti-coincidence shield ACS of the spectrometer SPI on-board INTEGRAL for the first 26.5 months of mission operation (up to Jan 2005). SPI-ACS works as a nearly omnidirectional gamma-ray burst detector above ~80keV but lacks spatial and spectral information. In this catalogue, the properties derived from the 50ms light curves (e.g., T_90_, C_max_, C_int_, variability, V/V_max_) are given for each candidate burst in the sample. A strong excess of very short events with durations <0.25s is found. This population is shown to be significantly different from the short- and long-duration burst sample by means of the intensity distribution and V/V_max_ test and is certainly connected with cosmic ray hits in the detector. A rate of 0.3 true gamma-ray bursts per day is observed.2005A&A...438.1175Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/438/1175CatalogResearchIsServedByTAP VizieR generic servicerelated-tohttp://www.mpe.mpg.de/gamma/science/grb/1ACSburst.html : Catalog Home PageIX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)IX/36 : GRANAT/PHEBUS catalog of cosmic gamma-ray burstsJ/A+AS/129/1 : GRANAT/WATCH catalogue of gamma-ray bursts (Sazonov+ 1998)J/ApJS/120/399 : ULYSSES supplement to GRB 3B catalog (Hurley+, 1999)J/ApJS/126/19 : BATSE gamma-ray burst spectral catalog. I. (Preece+, 2000)J/ApJS/134/385 : Supplement to the BATSE gamma-ray burst catalogshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/438/1175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/438/1175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/438/1175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/438/1175https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/438/1175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/438/1175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapINTEGRALGamma-raydefaultJ/A+A/438/1175/table2List of candidate bursts including properties of the individual eventsV/Vmax? V/Vmax (1)stat.fit.paramfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqID number of the eventmeta.id;meta.mainintTrigTrigger datestime.epochSigmaTrigger significance above backgroundstat.likelihood;obsintT90? Duration of event in T90stime.durationfloatnullablee_T90? Uncertainty of T90 durationsstat.errorfloatnullableCint? Integrated countskctphot.count;em.gamma.hardfloatnullablee_Cint? rms uncertainty on Cintkctstat.errorfloatnullableCmax? Peak count rate over 0.25s, in kct/0.25s4kct/sphot.count;em.gamma.hardfloatnullablee_Cmax? rms uncertainty on Cmax, in kct/0.25s4kct/sstat.errorfloatnullableVar(0.45)? Variability measure, with f=0.45 (2)src.var.indexfloatnullablee_Var(0.45)? rms uncertainty om V/Vmaxstat.errorfloatnullableConfConfirmation by other instruments (3)meta.notechar