J/ApJ/844/126ivo://CDS.VizieR/J/ApJ/844/126doi:10.26093/cds/vizier.18440126CDSShao L.Zhang B.-B.Wang F.-R.Wu X.-F.Cheng Y.-H.Zhang XiYu B.-Y.,Xi B.-J.Wang X.Feng H.-X.Zhang M.Xu D.2018-05-16T07:05:15Z2018-04-06T14:53:08ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomygamma-ray-burstsWe carry out a systematical study of the spectral lag properties of 50 single-pulsed gamma-ray bursts (GRBs) detected by the Fermi Gamma-Ray Burst Monitor. By dividing the light curves into multiple consecutive energy channels, we provide a new measurement of the spectral lag that is independent of energy channel selections. We perform a detailed statistical study of our new measurements. We find two similar power-law energy dependencies of both the pulse arrival time and pulse width. Our new results on the power-law indices would favor the relativistic geometric effects for the origin of spectral lag. However, a complete theoretical framework that can fully account for the diverse energy dependencies of both arrival time and pulse width revealed in this work is still lacking. We also study the spectral evolution behaviors of the GRB pulses. We find that a GRB pulse with negligible spectral lag would usually have a shorter pulse duration and would appear to have a "hardness-intensity tracking" behavior, and a GRB pulse with a significant spectral lag would usually have a longer pulse duration and would appear to have a "hard-to-soft" behavior.2017ApJ...844..126Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/844/126CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/609/935 : Gamma-ray burst formation rate (Yonetoku+, 2004)J/A+A/525/A53 : GBM parameters for detected FERMI bursts (Guetta+, 2011)J/ApJ/740/104 : BATSE GRB pulse catalog - preliminary data (Hakkila+, 2011)J/ApJS/199/18 : The Fermi GBM catalog (Paciesas+, 2012)J/ApJ/754/121 : GRBs from Fermi/GBM and LAT (The Fermi Team, 2012)J/ApJ/756/112 : Fermi/GBM GRB time-resolved spectral analysis (Lu+, 2012)J/ApJ/763/15 : Fermi GRB analysis. III. T_90_ distributions (Qin+, 2013)J/ApJS/207/39 : IPN supplement to the Fermi GBM (Hurley+, 2013)J/A+A/564/A125 : AGN Torus model comparison of AGN in the CDFS (Buchner+, 2014)J/ApJS/211/13 : The second Fermi/GBM GRB catalog (4yr) (von Kienlin+, 2014)J/ApJS/216/32 : Localizations of GRBs with Fermi GBM (Connaughton+, 2015)J/ApJS/218/11 : The 5yr Fermi/GBM magnetar burst catalog (Collazzi+, 2015)J/ApJ/811/93 : Fermi/GBM GRB minimum timescales (Golkhou+, 2015)J/A+A/573/A81 : Spectral properties of energetic GRBs (Yu+, 2015)J/A+A/588/A135 : Fermi/GBM GRB time-resolved spectral catalog (Yu+, 2016)J/ApJ/818/110 : Short GRBs with Fermi GBM and Swift BAT (Burns+, 2016)J/ApJS/223/28 : The third Fermi/GBM GRB catalog (6yr) (Bhat+, 2016)J/ApJS/229/31 : IPN supplement to the 2nd Fermi GBM catalog (Hurley+, 2017)http://fermi.gsfc.nasa.gov/ssc/ : Fermi Science Support Center home pagehttp://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html : Fermi GBM bursthttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/844/126https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/844/126http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/844/126https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/844/126https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/844/126http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/844/126GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/844/126/table1 (Our 50 GRBs detected by GBM and results on the spectral lag)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/844/126/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/844/126/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/844/126/table1?GETtext/xml+votable180.050000true42.75-18.90.0055555555555555566/435 584 2507 2875 3109 3145 3825 3861 6117 7176 7750 9023 9060 9693 12170 13191 13779 17269 17982 18704 18784 19097 19344 20505 20885 21059 21595 21665 22181 22566 24378 24495 27764 27837 32579 34952 36442 36444 37527 38949 40599 40839 42610 43147 43316 44928 45373 46319 46710 48771https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/844/126?format=asciiGamma-raydefaultJ/ApJ/844/126/table1Our 50 GRBs detected by GBM and results on the spectral lagNaINaI detector (3)meta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFermiBurst identifier (Trigger ID: YYMMDDNNN) (1)meta.id;meta.mainlongT90[1.4/140] 90% duration of the burststime.durationfloate_T90[0.09/7] Uncertainty in T90 (2)sstat.errorfloatBin[0.05/3] Manually determined time bin sizestime.intervalfloatt0[-20/35] Earliest arrival time of the most energetic photonsstime.epochfloate_t0[0.01/9] Lower uncertainty in t0 (2)sstat.errorfloatE_t0[0.03/14] Upper uncertainty in t0 (2)sstat.error;stat.maxfloattau[0.9/98] Limiting spectral lag at 1keVstime;arith.difffloate_tau[0.01/47] Lower uncertainty in tau (2)sstat.errorfloatE_tau[0.03/65] Upper uncertainty in tau (2)sstat.error;stat.maxfloatBeta[0.02/0.9] Power law index, {Beta}spect.indexfloate_Beta[0.002/0.4] Lower uncertainty in Beta (2)stat.errorfloatE_Beta[0/3.5] Upper uncertainty in Beta (2)stat.error;stat.maxfloatomega[0.5/50] Limiting half pulse width at 1keVstime.epochfloate_omega[0.05/6] Lower uncertainty in omega (2)sstat.errorfloatE_omega[0.07/7] Upper uncertainty in omega (2)sstat.error;stat.maxfloatgamma[0.01/0.7] Power law index, {gamma}spect.indexfloate_gamma[0.01/0.05] Lower uncertainty in gamma (2)stat.errorfloatE_gamma[0.01/0.08] Upper uncertainty in gamma (2)stat.error;stat.maxfloatdt-HR[0.1/12] Hardness-intensity time delaystime.epoch;arith.difffloate_dt-HR[0.009/5] Uncertainty in dt-HRsstat.errorfloat4yrDisplay data from the 4yr Fermi/GBM catalog (von Kienlin+, 2014, J/ApJS/211/13) if anymeta.ref.urlintnullable6yrDisplay data from the 6yr Fermi/GBM catalog (Bhat+, 2016, J/ApJS/223/28) if anymeta.ref.urlintnullableFig2LC of the GRB in 9 energy channels, the energy dependencies of the peak arrival time (tpeak) and the rms width (delta) of the pulsesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_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.main