J/ApJ/820/66ivo://CDS.VizieR/J/ApJ/820/66doi:10.26093/cds/vizier.18200066CDSDeng C.-M.Wang X.-G.Guo B.-B.Lu R.-J.Wang Y.-Z.Wei J.-J.,Wu X.-F.Liang E.-W.2018-05-16T06:55:20Z2018-02-13T06:28:31ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomygamma-ray-burstsredshiftedspectroscopyThe cosmic evolution of gamma-ray burst (GRB) luminosity is essential for revealing the GRB physics and for using GRBs as cosmological probes. We investigate the luminosity evolution of long GRBs with a large sample of 258 Swift/BAT GRBs. By describing the peak luminosity evolution of individual GRBs as L_p_{prop.to}(1+z)^k^, we get k=1.49+/-0.19 using the nonparametric {tau} statistics method without considering observational biases of GRB trigger and redshift measurement. By modeling these biases with the observed peak flux and characterizing the peak luminosity function of long GRBs as a smoothly broken power law with a break that evolves as L_b_{prop.to}(1+z)^kb^, we obtain k_b_=1.14^+0.99^_-0.47_ through simulations based on the assumption that the long GRB rate follows the star formation rate incorporating the cosmic metallicity history. The derived k and k_b_ values are systematically smaller than those reported in previous papers. By removing the observational biases of the GRB trigger and redshift measurement based on our simulation analysis, we generate mock complete samples of 258 and 1000 GRBs to examine how these biases affect the {tau} statistics method. We get k=0.94+/-0.14 and k=0.80+/-0.09 for the two samples, indicating that these observational biases may lead to overestimating the k value. With the large uncertainty of k_b_ derived from our simulation analysis, one cannot even convincingly argue for a robust evolution feature of the GRB luminosity.2016ApJ...820...66Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/820/66CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/175/179 : The BAT1 gamma-ray burst catalog (Sakamoto+, 2008)J/ApJ/711/495 : Durations of Swift/BAT GRBs (Butler+, 2010)J/ApJ/731/103 : Redshift catalog for Swift long GRBs (Xiao+, 2011)J/ApJS/195/2 : The second Swift BAT GRB catalog (BAT2) (Sakamoto+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/820/66https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/820/66http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/820/66https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/820/66https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/820/66http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/820/66GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/820/66/table1 (The Data of Our GRB Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/820/66/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/820/66/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/820/66/table1?GETtext/xml+votable180.050000true278.113416742.37061110.0055555555555555566/186 207 228 314 500 503 646 699 825 877 908 923 1001 2315 2336 2682 2948 2949 3089 3111 3536 3586 3935 4312 4323 4341 4371 4397 4449 4450 4809 4955 5051 5073 5376 5625 5633 5726 5840 5941 6261 6445 6521 6523 7227 7518 7532 7589 7750 8074 8318 8459 8641 8669 8798 9022 9100 9321 9370 9643 9682 9897 9989 10094 10335 10400 10407 10424 10447 10519 10704 10762 10852 10912 11058 11220 11657 11713 11756 11822 11905 12020 12134 13312 13331 13694 13924 14259 15004 15054 15530 16057 16282 16489 16524 16546 16661 16991 17316 17411 17453 17749 17814 18494 18681 18728 18777 18978 19049 19164 19168 19194 19293 19731 19865 19911 20030 20191 20263 20360 20372 20460 20655 20753 21082 21284 21498 21595 21766 21962 22129 22422 22559 22580 22619 23138 24007 24097 25174 25192 25901 25946 26011 26036 26441 26503 26671 27085 27238 27284 27289 27933 27962 27983 28032 28063 28071 28224 28555 28930 29731 29816 31185 31281 31385 31494 31521 31583 31700 31934 31982 32110 32310 32713 32790 33004 33146 33265 33278 33525 33679 33735 33813 33860 34147 34364 34440 34465 34590 34699 34788 34832 34949 35045 35088 35330 35393 35427 35569 35633 35844 36066 36297 36460 37391 37459 38280 38926 39076 39993 40167 40249 40273 40433 40482 40778 41020 42545 42901 44212 44436 44857 45008 45205 45361 45409 45510 45777 45828 45835 45836 46022 46218 46365 46395 46510 46594 46989 47027 47136 47148 47162 47245 47251 47436 47459 47620 47991 48007 48054 48371 48447 48458 49004https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/820/66?format=asciiGamma-raydefaultJ/ApJ/820/66/table1The Data of Our GRB SamplezRedshift (1)src.redshiftdoubleGRBGRB name (YYMMDDA)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlog10LpThe 1s peak isotropic luminosity in the 15-150keV band, log_10_L_p_ (in erg/s)log(1e-07W)phys.luminosity;em.gammafloate_log10LpUncertainty in log10Lplog(1e-07W)stat.errorfloatPThe 1s peak photon flux in the 15-150keV band (in photons/cm^2^/s) (1)ph.cm**-2.s**-1phot.flux.density;em.gamma.hardfloate_PUncertainty in P (1)ph.cm**-2.s**-1stat.errorfloatGammaPhoton index {Gamma} (1) (2)meta.code;spect.indexfloate_GammaUncertainty in Gamma (1)stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullable