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1、TheHighestEnergyCosmicRaysandTheirSources21–23May,2004@INRMoscowOutline?Physicsmotivation?ActivitiesatAkenoObservatory?Energydetermination&spectrum–Showerproperties&analysis–Systematicerrorinenergyestimation–Comparisonwithotherresults(HiRes&A1)?Muoncomponent&chemicalcompositio
2、n–Gamma-rayshowerproperties–Chemicalcomposition&gamma-rayfluxlimitestimation?Summary&outlookPhysicsmotivation?Understandingnature&originofUHECRs(>1019eV)–Energyspectrum–Arrivaldirectiondistribution–Chemicalcomposition?SuperGZKparticlesincl.highestenergycosmicrays(>1020eV)–Bott
3、om-upscenarios?AGNs/GRBs/Galacticclustersetc.?Hadronicprimariespredicted–Top-Downscenarios?Topologicaldefects?Superheavydarkmatter?Z-burst?Gamma-ray+nucleon1riespredictedpUHECRγCMB→Nπ+?Sourcelocationstillnotidentified,(E0~5x1019eV)…..but…..Arrivaldirectiondistribution(>4x1019e
4、V;θ<50o):4x1019–1020eV:>1020eV?Smallscaleanisotropy–Eventclustering(>4x1019eVwithin2.5o)6doublets(○)&1triplet(○)observed?Againstexpected2.0doublets(Pch<0.1%)?Theremustbe~250EHECRsources(185–340)SpaceangledistributionofeventsLogE>19.0LogE>19.63.4σ4.4σ?Significantpeak@0degree–im
5、plyingpresenceofcompactEHECRsourcesAGASACollaboratorsJapan?InstituteforCosmicRayResearch,?RIKEN(Wako)UniversityofTokyo(Kashiwa)–YoshiyaKawasaki,NaotoSakaki,–MasakiFukushima,NaoakiHayashida,HirohikoM.ShimizuHideyukiOhoka,SatokoOsone,?EhimeUniversity(Matsuyama)MakotoSasaki,Masah
6、iroTakeda,ReikoTorii–SatokoMizobuchi,HisashiYoshi?KinkiUniversity(Osaka)?FukukiUniversityofTechnology(Fukui)–MichiyukiChikawa–MotohikoNagano?UniversityofYamanashi(Kofu)?CommunicationResearchLaboratory(Tokyo)–KenHonda,NorioKawasumi,–MasahikoSasanoItsuroTsushima?NationalInstitut
7、eofRadiologicalSciences(Chiba)?SaitamaUniversity(Saitama)–YukioUchihori–NaoyaInoue?MusashiInstituteofTechnology(Tokyo)?ChibaUniversity(Chiba)–KenjiKadota–NobuyukiSakurai,ShigeruYoshida?TokyoInstituteofTechnology(Tokyo)FederalRepublicofGermany–FumioKakimoto?Max-Planck-Institute
8、forPhysics(Munich)?NishinaMemorialFundation(Tokyo)–KenjiShino
