23347.ltb模型的星系計數(shù)檢驗——宇宙非均勻性的研究

1、南開大學(xué)碩士學(xué)位論文LTB模型的星系計數(shù)檢驗宇宙非均勻性的研究姓名：王迎賓申請學(xué)位級別：碩士專業(yè)：理論物理指導(dǎo)教師：孟新河201205AbstractAbstractTheobservationsonthedistanttypeIasupernovabytwoindependentteamsin1998revealedthattheapparentluminosityoftheobservedsupernovaisdimmerthant

2、hatpredictedbycosmologicaltheoryInthecontextofthesocalledstandardmodelofcosmologythesephenomenaareexplainedas”DarkEnergy’’whichisthoughttobedominatingthecurrentuniversewithconstantenergydensityandpositivepressFromthenon，

3、thedarkenergyphenomenahasbeenoneofthemostimportantchallengesofcurrentcosmologyandfundamentalphysicsThereisnoconsistentinte印remfionofnatureofdarkenergyacceptedbymostpeopleOntheotherhand，withoutdarkenergytheeffortsofunders

4、tandingtheproblemthroughmodificationofgravityorinspectingthebasisofcosmologicalbackgroundsisonprocessallthetime，andattractmuchattentionoftheoristsandastronomersAmongthelatterstudies，LTBtheoryplaysthemostinfluentialandtyp

5、icalroleItexplainthedarkenergyphenomenabycomputingtheinfluencesofcosmologicalinhomogeneityontheastronomicalobservationsInthisthesis，thestandardmodelofcosmologyisreviewedfirstlyandthedarkenergyproblemisdiscussedinthiscont

6、extWeinsuccessionsummarizetheLTBtheorysystematicallyandcomputethewaytocomparethetheoreticalmodelswithobservationsThenthefamousobservationalitemof2degreeFieldGalaxyRedshiftSurvey(2dFGRS)andthereleaseddataisintroducedinthe

7、nextpartUsingthesedataofgalaxiesnumbercounts，LTBmodelsaretestedandcomparedwiththestandardcosmologicalmodelItisshownthatLTBmodelsaccordwiththedataaswellasthestandardmodelThepossibletestsonLTBmodelwithotherastronomicalobse