J/A+A/685/A163ivo://CDS.VizieR/J/A+A/685/A163doi:10.26093/cds/vizier.36850163CDSLlamas Lanza M.Godet O.Arcier B.Yassine M.Atteia J.-L.Bouchet L.2024-11-29T20:02:22Z2024-07-25T13:16:25ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomygamma-ray-burstsastronomical-modelsredshiftedGamma-ray bursts (GRBs) can be detected at cosmological distances, and therefore can be used to study the contents and phases of the early Universe. The 4-150keV wide-field trigger camera ECLAIRs on board the Space-based multi-band Variable Object Monitor (SVOM) mission, dedicated to studying the high-energy transient sky in synergy with multi-messenger follow-up instruments, has been adapted to detect high-z GRBs. Investigating the detection capabilities of ECLAIRs for high-redshift GRBs and estimating the impacts of instrumental biases in reconstructing some of the source measured properties, focusing on GRB duration biases as a function of redshift. We simulated realistic detection scenarios for a sample of 162 already observed GRBs with known redshift values as they would have been seen by ECLAIRs. We simulated them at redshift values equal to and higher than their measured value. Then we assessed whether they would be detected with a trigger algorithm resembling that on board ECLAIRs, and derived quantities, such as T90, for those that would have been detected. We find that ECLAIRs would be capable of detecting GRBs up to very high redshift values (e.g. 20 GRBs in our sample are detectable within more than 0.4 of the ECLAIRs field of view for z_sim_>12). The ECLAIRs low-energy threshold of 4keV, contributes to this great detection capability, as it may enhance it at high redshift (z>10) by over 10% compared with a 15keV low-energy threshold. We also show that the detection of GRBs at high-z values may imprint tip-of-the-iceberg biases on the GRB duration measurements, which can affect the reconstruction of other source properties.2024A&A...685A.163Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/685/A163CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/685/A163https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/685/A163http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/685/A163https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/685/A163https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/685/A163http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/685/A163GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/685/A163/tablea1 (Swift/BAT GRBs analysed in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/685/A163/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/685/A163/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/685/A163/tablea1?GETtext/xml+votable180.050000true154.199583343.54827780.0055555555555555566/207 228 314 500 646 825 923 1087 2315 2336 2574 2682 2948 3089 3111 3586 4271 4449-4450 4485 4955 5051 5073 5625 5657 5726 5790 6523 7254 7589 7750 8345 9022 9321 9512 9682 9897 9989 10335 10400-10401 10407 10424 10447 10602 11058 11220 11748 11822 12006 12020 12134 13252 13476 14259 15530 16057 16282 16661 16991 17395 17411 17453 17721 17749 18777 18978 19164 19168 19194 19334 19544 19731 20191 20401 20753 20774 21284 21439 21595 21688 21766 21962 22619 22816 23306 24097 25174 25192 25901 26011 26076 26503 26671 27085 27289 27434 27933 27962 27965 28032 28496 28555 28930 29019 29731 29816 30088 30195 31385 31675 31934 32310 33066 33751 33813 33860 34488 34699 34788 35392 35427 35633 35844 36035 36066 36107 36142 36297 36460 36800 37391 37459 38869 39076 39993 40273 40482 40778 41064 42133 44212 44223 44436 44715 45361 45409 45777 45828 45835 46150 46212 46218 46594 46989 47031 47148 47162 47245 47436 48219 48458https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/685/A163?format=asciiGamma-raydefaultJ/A+A/685/A163/tablea1Swift/BAT GRBs analysed in this studySimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB name (NNNNNNA)meta.id;meta.maincharzmeasMeasured redshiftsrc.redshift;pos.heliocentricfloatT90obsObserved duration of the time interval over which 90% (T_90^obs^)stime.durationfloatFermi[Yes ] Yes if a corresponding Fermi/GBM detection was found, and therefore whether its derived spectrum was usedmeta.codechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/685/A163/tablee1General results for each GRB in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRN Name (NNNNNNA)meta.id;meta.mainchariS/NmedMedian of the iS/N value (1)stat.snrfloatT90obs? Observed duration of the time interval over which 90% (T_90^obs^) (1)stime.durationfloatnullableFFoV? Detectable fraction of the FoV (1)%instr.offsetfloatnullablezhor? Redshift horizon (1)%src.redshift;pos.heliocentricfloatnullableFrac? T_90_^src^(z_hor_)/T_90_^src^(z_meas_) value (1)stat.fit.paramfloatnullable