1、學娩ft碼：!jlIILLIIIITIIIIIILLIIIIIIIIIIIIIIIIIIIILIIIIIIlllY3258543學象142201059上夠嬸范大爹碩士學位論文伽馬射線暴標度問題的研究學專AbstractSince1998，greatprogresshasbeenmadeintheresearchofcosmologyTheobservationsofhigh—redshiRtypeIasupernovaeandcosmi

2、cmicrowavebackgroundindicatetheuniverse’SacceleratingexpansionInordertoexplainthisphenomenon，twowaysareputforwardOnewayistomodifyEinsteinequationontheleft，thatistosaymodifygravitationtheoryTheotherwayistoaddthesocalledda

3、rkenergTontherightsideofEinsteinequationThereisnodoubtthattheanalysisoftheexpansionhistoryoftheuniverseisclearlyoneofthemostbasicresearchcontentHowevertheanisotropicobservationsofcosmicmicrowavebackgroundandSNIahasitsown

4、limitationsanlininaraftburstsareconsideredthemostintenseexplosionsintheUniverseComparedwithSNIa，gammaphotonhasstrongpenetrability，almostnotaffectedbytheintergalacticdustmaterialAtthesametime，theaverageredshiftofgammarayb

5、uI’stsis2～3，SOgammarayburstscallfilltheredshiffgapbetweencosmicnficrowavebackgToundradiationandSNIaInthefirstchapter，wemainlyintroducedthebasicknowledgeofgammarayburstsInthesecondchapter，weuse)(2fittingmethodforsixlumino

6、sitycorrelationstogettheirbestparametervaluesLuminositycorrelationisthecorrelationbetweenobservablesandabsoluteluminosityorenergyofgammarayburstsButthedeterminationofparametervahlesinhnninositycorrelationareobtainedinthe

7、e&seofparticularcosmologicalmodel，SObyusingdataofgammaraybursttolimitthecosmologicalmodelhasaso—calledcirculationproblem訛simultaneouslyminimize)(2withrespecttobothcorrelationparameteI‘SandfunctionparametersWithtilehelpof

8、principalcomponentanalysis，wefirstreducethedimensionaliVoftrainningsetwhichistheensembleofH0一independentcomovingangulardiametervectorThenwecombinecorrelationparameterswithparameterswhichremainedafterdimensionreduction，by