天体物理学科介绍课件

TightLiso-Ep-Γ0RelationofLongGamma-RayBurstsEnweiLiang

GuangxiUniversity,ChinaIAUS324:NewFrontiersinBHAstrophys.2016.9.12-9.16,LjubljanaSeloveniaTightLiso-Ep-Γ0RelationofL2GeneralPictureofGamma-RayBursts

V≥0.9999cGRBsandtheirafterglowsareproducedfromextremelyrelativisticjetspoweredbythecentralengine.2GeneralPictureofGamma-RayEstimatingtheInitialΓ0ofGRBjetsWiththefireballdecelerationtime(e.g.,Sari&Piran1999)Withthe"compactness"argument:(e.g.,Lithwick&Sari2001)Withthephotosphereradiation:(e.g.Zou+2015)Liang+2010Tang+2014Peng+2014EstimatingtheInitialΓ0ofGOpticalandX-rayafterglowCartoonLightcurvesZhangetal.2006,ApJ;Li,Liangetal.2012,ApJOpticalEmissioncomponentsX-rayEmissioncomponentsOpticalandX-rayafterglowCaRelationbetweenafterglowonsetandpromptgamma-raysLiangetal.2010,

ApJOpticalafterglowonsetisdetectedfor1/3ofGRBsOnsetpeakluminosityiscorrelatedwithpromptgamma-rayluminosity.RelationbetweenafterglowonsEiso(orLiso)-Γ0RelationAtightcorrelationbetweentheEisoandtheLorentzfactorofGRBfireballLiangetal.2010，2013,ApJ;LVetal.2012,ApJLEiso(orLiso)-Γ0RelationAtiEiso(orLiso)-EpRelationTheserelationswasfoundwithGRBsdetectedwithBeppoSAXandalsoconfirmedwithSwift/BATandFermi/GBMGRBs.Amatietal.2012,IJMPDYonetokuetal.2004,ApJLuetal.2012,ApJEiso(orLiso)-EpRelationThesIsthelargeintrinsicdispersionofpaircorrelationsduetomissingofthethirdpart?Relationamongthethreeparameters?Eiso(orLiso)-Epvs.Eiso(orLiso)-Γ0RelationAmatietal.2012,IJMPDLiangetal.2010,ApJIsthelargeintrinsicdispers9AtightLiso-Ep,z-Γ0relationLiang+2015,ApJGRB060218:Γ0

~2.3（Soderberg+2006）9AtightLiso-Ep,z-Γ0relation10AtightLiso-Ep,z-Γ0

relationLiang+2015,ApJGRB060218:Γ0

~2.3（Soderberg+2006）DoublecheckwithGRBswhoseΓ0arederivedfromthespectralcutoffenergyobservedwithFermi/LAT.10AtightLiso-Ep,z-Γ0relatio11Dai,Liang,&Xu2004,ApJL；Liang&Zhang2005,ApJLiso-Ep,z-Γ0

asanewGRBcosmologyruler?Ejet-Eprelation(Ghirlanda+2004)Eiso-Ep-tjetrelation(Liang&Zhang2005)11Dai,Liang,&Xu2004,ApJL；12Liang+2015;Xin+2016Liso-Ep,z-Γ0

asanewGRBcosmologyruler?Advantages:Atighterrelationthanpreviousones.Issues:NeedingtobeconfirmedwithLL-GRBs(moderaterelativisticjets?)NeedingtogeometriccorrectiontoLisoIdentifyingthecosmicevolutionofjetluminosity.

？12Liang+2015;Xin+2016Liso3.OurOn-GoingObservationalProjectR=21iPTFR=16

GWACR=13

Mini-GWACGRBsOpticalTels-400s-200s0100s5m1h1dFlux

magnitudeR=19

60/80cmGRBtriggerFollow-upHu+2014

Singer+20123.OurOn-GoingObservationalOurCurrentOpticalMonitoringProjectIdentificationandearlyphotometry

Spectrum、redshiftLatephotometry30s10mhoursGWAC/GRBalert

60/80cmTelescope2mtelescopetriggerOurCurrentOpticalMonitoringExamplesofOurMonitoringResultsMini-GWACupperlimit:M=13.2B,V,R,Iobservationswithour60/80cmtelescopesinXinglongObservatory.GRB160131ALiang

+2016,inprep.ExamplesofOurMonitoringResXin

+2016,ApJ,submittedGRB140629Xin+2016,ApJ,submittedGRBZhong+2016,ApJ,inpressZhong+2016,ApJ,inpressHuang+2016,ApJ,inpressHuang+2016,ApJ,inpressXin+2016a,ApJXin+2016a,ApJ天体物理学科介绍课件21Summary

MeasuringthejetinitialLorentzfactorsofGRBswiththefireballdecelerationtimeobservedintheopticalbandrangefrom~100to1000.TheLorentzfactorsarecorrelatedwithLiso(orEiso),andatightercorrelationisfoundbyaddingEp.TheLiso-Ep,z-Γ0maybeapromisingGRBcosmologyruler,butissuesarestillthere.Ournewobservationalprojectisgoingonforpushingthecosmologyuseofthisrelation.

Thanks!21SummaryMeasuringthejetiTightLiso-Ep-Γ0RelationofLongGamma-RayBurstsEnweiLiang

GuangxiUniversity,ChinaIAUS324:NewFrontiersinBHAstrophys.2016.9.12-9.16,LjubljanaSeloveniaTightLiso-Ep-Γ0RelationofL23GeneralPictureofGamma-RayBursts

V≥0.9999cGRBsandtheirafterglowsareproducedfromextremelyrelativisticjetspoweredbythecentralengine.2GeneralPictureofGamma-RayEstimatingtheInitialΓ0ofGRBjetsWiththefireballdecelerationtime(e.g.,Sari&Piran1999)Withthe"compactness"argument:(e.g.,Lithwick&Sari2001)Withthephotosphereradiation:(e.g.Zou+2015)Liang+2010Tang+2014Peng+2014EstimatingtheInitialΓ0ofGOpticalandX-rayafterglowCartoonLightcurvesZhangetal.2006,ApJ;Li,Liangetal.2012,ApJOpticalEmissioncomponentsX-rayEmissioncomponentsOpticalandX-rayafterglowCaRelationbetweenafterglowonsetandpromptgamma-raysLiangetal.2010,

ApJOpticalafterglowonsetisdetectedfor1/3ofGRBsOnsetpeakluminosityiscorrelatedwithpromptgamma-rayluminosity.RelationbetweenafterglowonsEiso(orLiso)-Γ0RelationAtightcorrelationbetweentheEisoandtheLorentzfactorofGRBfireballLiangetal.2010，2013,ApJ;LVetal.2012,ApJLEiso(orLiso)-Γ0RelationAtiEiso(orLiso)-EpRelationTheserelationswasfoundwithGRBsdetectedwithBeppoSAXandalsoconfirmedwithSwift/BATandFermi/GBMGRBs.Amatietal.2012,IJMPDYonetokuetal.2004,ApJLuetal.2012,ApJEiso(orLiso)-EpRelationThesIsthelargeintrinsicdispersionofpaircorrelationsduetomissingofthethirdpart?Relationamongthethreeparameters?Eiso(orLiso)-Epvs.Eiso(orLiso)-Γ0RelationAmatietal.2012,IJMPDLiangetal.2010,ApJIsthelargeintrinsicdispers30AtightLiso-Ep,z-Γ0relationLiang+2015,ApJGRB060218:Γ0

~2.3（Soderberg+2006）9AtightLiso-Ep,z-Γ0relation31AtightLiso-Ep,z-Γ0

relationLiang+2015,ApJGRB060218:Γ0

~2.3（Soderberg+2006）DoublecheckwithGRBswhoseΓ0arederivedfromthespectralcutoffenergyobservedwithFermi/LAT.10AtightLiso-Ep,z-Γ0relatio32Dai,Liang,&Xu2004,ApJL；Liang&Zhang2005,ApJLiso-Ep,z-Γ0

asanewGRBcosmologyruler?Ejet-Eprelation(Ghirlanda+2004)Eiso-Ep-tjetrelation(Liang&Zhang2005)11Dai,Liang,&Xu2004,ApJL；33Liang+2015;Xin+2016Liso-Ep,z-Γ0

asanewGRBcosmologyruler?Advantages:Atighterrelationthanpreviousones.Issues:NeedingtobeconfirmedwithLL-GRBs(moderaterelativisticjets?)NeedingtogeometriccorrectiontoLisoIdentifyingthecosmicevolutionofjetluminosity.

？12Liang+2015;Xin+2016Liso3.OurOn-GoingObservationalProjectR=21iPTFR=16

GWACR=13

Mini-GWACGRBsOpticalTels-400s-200s0100s5m1h1dFlux

magnitudeR=19

60/80cmGRBtriggerFollow-upHu+2014

Singer+20123.OurOn-GoingObservationalOurCurrentOpticalMonitoringProjectIdentificationandearlyphotometry

Spectrum、redshiftLatephotometry30s10mhoursGWAC/GRBalert

60/80cmTelescope2mtelescopetriggerOurCurrentOpticalMonitoringExamplesofOurMonitoringResultsMini-GWACupperlimit:M=13.2B,V,R,Iobservationswithour60/80cmtelescopesinXi