J/ApJ/865/153ivo://CDS.VizieR/J/ApJ/865/153doi:10.26093/cds/vizier.18650153CDSLu R.-J.Liang Y.-F.Lin D.-B.Lu J.Wang X.-G.Lu H.-J.Liu H.-B.,Liang E.-W.Zhang B.2019-10-30T08:04:20Z2019-10-30T08:06:16ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomygamma-ray-burstsastronomical-modelsThe spectral evolution and spectral lag behavior of 92 bright pulses from 84 gamma-ray bursts observed by the Fermi Gamma-ray Burst Monitor (GBM) telescope are studied. These pulses can be classified into hard-to-soft pulses (H2S; 64/92), H2S-dominated-tracking pulses (21/92), and other tracking pulses (7/92). We focus on the relationship between spectral evolution and spectral lags of H2S and H2S-dominated-tracking pulses. The main trend of spectral evolution (lag behavior) is estimated with logE_p_{propto}k_E_log(t+t_0_) (^{tau}{propto}k_^{tau}logE), where E_p_ is the peak photon energy in the radiation spectrum, t+t_0_ is the observer time relative to the beginning of pulse -t0, and ^{tau} is the spectral lag of photons with energy E with respect to the energy band 8-25keV. For H2S and H2S-dominated-tracking pulses, a weak correlation between k_^{tau}/W and kE is found, where W is the pulse width. We also study the spectral lag behavior with peak time t_pE_ of pulses for 30 well-shaped pulses and estimate the main trend of the spectral lag behavior with logt_pE_{propto}k_tp_logE. It is found that k_tp_ is correlated with kE. We perform simulations under a phenomenological model of spectral evolution, and find that these correlations are reproduced. We then conclude that spectral lags are closely related to spectral evolution within the pulse. The most natural explanation of these observations is that the emission is from the electrons in the same fluid unit at an emission site moving away from the central engine, as expected in the models invoking magnetic dissipation in a moderately high-{sigma} outflow.2018ApJ...865..153Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/865/153CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/126/19 : BATSE gamma-ray burst spectral catalog. I. (Preece+, 2000)J/ApJ/720/1146 : Spectral analysis of GRBs (Lu+, 2010)J/ApJ/740/104 : BATSE GRB pulse catalog - preliminary data (Hakkila+, 2011)J/A+A/525/A53 : GBM parameters for detected FERMI bursts (Guetta+, 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/MNRAS/431/3608 : BeppoSAX/GRBM and Fermi/GBM long GRBs (Dichiara+, 2013)J/ApJS/207/39 : IPN supplement to the Fermi GBM (Hurley+, 2013)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/ApJ/818/110 : Short GRBs with Fermi GBM and Swift BAT (Burns+, 2016)J/ApJ/826/228 : The Fermi-GBM three-year X-ray burst catalog (Jenke+, 2016)J/A+A/588/A135 : Fermi/GBM GRB time-resolved spectral catalog (Yu+, 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)J/ApJ/844/126 : New spectral lag measurements of Fermi/GBM GRBs (Shao+, 2017)J/ApJ/855/101 : BATSE TTE GRB pulse catalog (Hakkila+, 2018)ftp://legacy.gsfc.nasa.gov/fermi/data/ : Fermi FTP datahttp://fermi.gsfc.nasa.gov/ssc/data/ : Fermi data on NASA websitehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/865/153https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/865/153http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/865/153https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/865/153https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/865/153http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/865/153GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/865/153/pulses (List of the 92 pulses; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/865/153/pulses?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/865/153/pulses?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/865/153/pulses?GETtext/xml+votable180.050000true182.8-6.40.0055555555555555566/137 435 584 646 2018 2875 3145 3243 3825 4693 5153 5530 5625 6439 6802 7750 8976 9023 9409 9693 11256 11563 12170 13191 13779 14404 16057 16282 17269 18445 18704 18784 19097 19344 20077 20505 21059 21157 21756 22181 22838 23423 24495 24570 25467 25552 26013 28496 29024 30595 32234 32419 32923 33207 33832 34461 34952 35633 35724 36444 37391 37527 37550 37672 38362 38607 38652 38949 40542 40599 40839 40957 42710 43147 43316 44617 44948 45373 45455 45835 46710 47153https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/865/153?format=asciiGamma-raydefaultJ/ApJ/865/153/pulsesList of the 92 pulses; table added by CDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB trigger name (bnYYMMDDddd)meta.id;meta.maincharprimarym_GRB? GRB pulse segment fitmeta.code.multipintnullableSimbadSimbad 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.mainnullableJ/ApJ/865/153/table1*Results of light curve fitting with Equation (1) for 92 pulsesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB trigger name (bnYYMMDDddd)meta.id;meta.maincharprimarym_GRB? GRB pulse segment fitmeta.code.multipintnullableBinEnergy Bin (1)phys.energycharIm[7.2/676.6] model peak fluxphot.flux;meta.modelled;stat.maxfloate_Im[0.3/7.6] Uncertainty in Imstat.errorfloattm[0.08/113.5] Model time of peak fluxmeta.notefloate_tm[0/27493] Uncertainty in tmstat.errordoubler[0.2/46.7] Model power-law rising indexstat.paramfloate_r[0.01/19] Uncertainty in rstat.errorfloatd[0/51523.6] Model power-law decaying indexstat.paramdoublee_d[0/7402830] Uncertainty in dstat.errordoublet0[-103/8] Offset of the pulse zero timetime;arith.difffloatchi2[0.3/2] Reduced {chi}^2^stat.fit.chi2floatJ/ApJ/865/153/table3Results of the spectral lag analysis for 92 pulsesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB trigger name (bnYYMMDDddd)meta.id;meta.maincharprimarym_GRB? GRB pulse segment fitmeta.code.multipintnullableTmin[-2/105] Time bin, minimumstime.interval;stat.minfloatTmax[1.7/150] Time bin, maximumstime.interval;stat.maxfloatBinEnergy Bin (1)phys.energychartau-cat[-2.5/9.7] Spectral lagstime;arith.difffloate_tau-cat[0.01/1.7] Uncertainty in spectral lagsstat.errorfloatJ/ApJ/865/153/table4Values of {tau}_31_, W, k_{tau}_, k_E_ for 92 pulsesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB trigger name (bnYYMMDDddd)meta.id;meta.maincharprimarym_GRB? GRB Pulse segment fitmeta.code.multipintnullableEvolEvolution (1)meta.codechartau31[-1/8.7] Spectral lag ({tau}_31_)time;arith.difffloate_tau31[0.01/14] Uncertainty in tau31stat.errorfloatW[0.3/55.7] Pulse widthsrc.var.pulsefloatktau[-1.9/14.8] Fit slope, tau31-logE relationstat.fit.paramfloate_ktau[0.02/4] Uncertainty in ktaustat.errorfloatkE[-2/0.8] Fit slope, logEp to t relationstat.fit.paramfloate_kE[0.02/0.6] Uncertainty in kEstat.errorfloatJ/ApJ/865/153/table2*Results of the time-resolved RMFIT spectral analysis for 92 pulsesPulsePulse segment fitmeta.notecharm_GRB? GRB pulse segment fitmeta.code.multipintnullableTmin[-4.5/135.7] Time bin, minimumstime.interval;stat.minfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGRB Common Namemeta.idcharGRBGRB trigger name (bnYYMMDDddd)meta.id;meta.maincharprimaryTmax[-2/157] Time bin, maximumstime.interval;stat.maxfloatAmp[0/43.5] Amplitude from RMFITsrc.var.amplitudefloate_Amp[0/107] Uncertainty in Ampstat.errorfloatEp[7.7/3973] peak photon energy from RMFITkeVem.energyfloate_Ep[0/1174] Uncertainty in EpkeVstat.errorfloatalpha[-2/1] RMFIT, {alpha} parameterstat.fit.paramfloate_alpha[0/1.5] Uncertainty in {alpha}stat.error;pos.eq.rafloatbeta[-6/100] RMFIT, {beta} parameterstat.fit.paramfloate_beta[0/1.4] Uncertainty in {beta}stat.errorfloatFlux[4.3e-8/2.8e-5] Flux, erg/s/cm2mW.m**-2phot.flux.density;em.gamma.harddoublee_Flux[7e-9/7e-7] Uncertainty in Flux, erg/s/cm2mW.m**-2stat.error;phot.fluxdoublechi2[0.7/2] Reduced {chi}^2^stat.fit.chi2float