6533b7d2fe1ef96bd125e1bc

RESEARCH PRODUCT

Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory

A. F. BarbosaM. AveM. AveJeffrey BrackOlaf ScholtenT. TarutinaHumberto Ibarguen SalazarD. NosekR. E. BurtonM. Gómez BerissoIoana Codrina MarisD. AllardC. De DonatoC. De DonatoA.m. Van Den BergDarko VeberičR. C. ShellardG. MarsellaS. MuellerB. R. BeckerC. LachaudA. DorofeevB. RevenuU. FröhlichG. NavarraF. SchüsslerR. BoninoH. DembinskiKreso KadijaV. VerziJ. R. VázquezS. L.c. BarrosoT. YamamotoBrian FickJ. StasielakS. CoutuM. GoldC. RivièreL. VillaseñorI. Rodriguez-caboJ. KleinfellerC. HojvatC. MacolinoJan EbrS. GrebeDaniel KuempelCarlos EscobarM. NyklicekA. CreusotRalph EngelJ. RidkyA. CordierS. MalderaD. HarariN. T. ThaoD. WarnerJ. OehlschlägerH.o. KlagesR. SquartiniE. ColomboLisa M. GogginR. BruijnRichard DallierHernan WahlbergT. SusaA. StutzJ. SchovancovaL. NožkaPaulo J. S. GonçalvesA. GorgiT. PaulB. J. WhelanCarola DobrigkeitD. MaurizioR. F. GamarraI. ValiñoA. KriegerL. CarameteM. HussainFabian SchmidtP. WahrlichSubir SarkarAlexander KusenkoOlivier RavelE. MenichettiK.-h. BeckerC. AramoAlan WatsonEsteban RouletF. SuarezThomas HebbekerE. SantosM.e. OrtizE. D. FraenkelH. J. MathesE. MorenoA. Della SelvaErnesto ArgandaC. E. FracchiollaGraciela B. GelminiJ. Lozano BahiloSegev BenzviDenise BoncioliK. PayetPham Ngoc DiepG. De La VegaP. RistoriV. M. Olmos-gilbajaB. L. LagoMartina BohacovaMartina BohacovaJörg R. HörandelGerman RosD. D'ursoCorinne BeratM. GillerV. PirronelloA. ŚMiałkowskiChristopher MorrisJ. SorokinHeino FalckeHeino FalckeMiroslav HrabovskýIuri Muniz PepeG. MatthiaeN. PalmieriJaime Alvarez-muñizJohn G. LeeE. ParizotG. Medina-tancoJ. Rodriguez RojoD. SchusterM. PimentaA. HaungsA. BellétoileJ. L. HartonC. E. SantoM. L. Díaz CastroG. FarrarS. J. De JongI. Lhenry-yvonRalf UlrichRalf UlrichM. AmbrosioG. WieczorekG. SalinaOlivier DelignyMarco IarloriT. SchmidtEnrique ZasP. MantschAntonio BuenoSergio PastorE. PetermannCorbin CovaultD. García GámezPierre BilloirD. ThomasY. PetrovA. CurutiuS. FliescherR. PelayoA. RedondoD.v. SemikozLuis A. AnchordoquiLino MiramontiA. PetroliniWarner A. MillerF. A. S. RezendeMarkus RothZ. SzadkowskiW. TkaczykS. JiraskovaJ. L. KelleyC. Di GiulioL. Del PeralS. RiggiKai DaumillerMiroslav PechVincent MarinFernando ContrerasA. MenshikovM. GrigatMaurice StephanGualberto AvilaP. BauleoDusan MandatA. TamburroB. KeilhauerS. GambettaDariusz GoraDariusz GoraJ. PȩkalaC. J.w.p. TimmermansA. TonachiniR. PiegaiaM. D. Rodríguez-fríasPetr TravnicekM. S. SutherlandN. PachecoD. B. TridapalliJ. AllenA. ItalianoW. J. M. De Mello JuniorA. C. FauthS. J. SciuttoR. PesceAngela V. OlintoJ. R. T. De Mello NetoG. CataldiT. KarovaH. LyberisD. TcherniakhovskiRossella CarusoPietro OlivaH. SchoorlemmerA. LuceroT. RosslerCarla BonifaziJose A. BellidoR. M. De AlmeidaG. La RosaL. ValoreJ. ParrisiusMiguel MostafáJ. Rodriguez MartinoJ. PetrovicS. R. GozziniT. BergmannM. VidelaM. ZavrtanikN. NierstenhoeferA. G. MariazziC. RobledoJ. A.j. MatthewsK. LouedecMaria-teresa DovaM. BlancoD. NitzSofia AndringaB. GarcíaMario ScuderiTobias WinchenP. LebrunR. LópezKaren S. Caballero-moraXavier BertouR. KnapikAzadeh KeivaniV. C. HolmesM. ProuzaD. LebrunI. DutanJaime RosadoP. AbreuM. KaducakS. WesterhoffD. RavignaniA. ChiavassaD. H. KoangJose ChinellatoI. ZawIvor FleckS. Dagoret-campagneK. ArisakaF. SalamidaF. SalamidaU. GiaccariJ. D. SwainG. RodriguezG. RodriguezM. LudwigA. ZepedaPedro AssisJ. W. CroninA. EtchegoyenH. SchielerD. HeckK. B. BarberL. R. WienckePedro BrogueiraS. NavasB. M. BaughmanM. MelissasG. YuanMatias TuerosM. G. WinnickJavier TiffenbergPetr SchovanekA. Letessier-selvonMarcos SantanderF. KuehnR. CesterD. MeloR. A. VázquezMartin ErdmannAntonella CastellinaM. RisseM. RisseE. StrazzeriE. GrashornT. AntičićM. PlatinoB. MoralesA. ChouA. ChouA. InsoliaM. KleifgesD. ZavrtanikLorenzo CazonLorenzo CazonA. FilipčičO. TaşcǎuDaniel Omar BadagnaniD. Pakk Selmi-deiNataliia BorodaiM. MonasorM. MonasorRoger W ClayMariangela SettimoM. PalatkaF. SarazinP. W. YounkK. KulbartzS. PetreraDomenico TegoloDomenico TegoloC. MeurerK. H. KampertAlexey YushkovT. BäckerFrancisco J. BlancoV. H. PonceF. Gomez AlbarracinV. ScheriniL. PerroneJiri ChudobaA. HornefferP. PetrincaR. SatoH. BlümerT. SuomijärviJ. PallottaE. J. QuelA. SchmidtPaul SommersPiotr HomolaP. Facal San LuisP. Facal San LuisP. GouffonD. Kruppke-hansenBalázs KéglP. N. DongM. J. CooperA. D. SupanitskyV. HalenkaF. ArquerosP. NecesalC. L. WilliamsH. M. SpinkaH. M. SpinkaB. Rouillé-d'orfeuilO. KrömerJ. D. HagueTonia M. VentersF. IonitaM. De DomenicoMarcio Aparecido MullerE. TrovatoJ. G. GonzalezJ. G. GonzalezJ. KnappA. Lopez AgüeraAlberto FilevichJ. L. NavarroG. GolupPeter HansenN. KunkaG. TristramDaniel GonzalezC. J. Todero PeixotoF. GuarinoJohn MatthewsJohn MatthewsPeter BuchholzMaria Rita ColucciaH. GlassNicolás G. BuscaM. I. MichelettiMarco AgliettaG. DecerpritRúben ConceiçãoPascal LautridouJ. C. DiazBeatriz B. SiffertP. SchifferMichael DuvernoisS. ParlatiS. SchulteE. M. SantosP. T. NhungA. FerreroA. TapiaH. GemmekeM. UngerY. GuardincerriH. WilczyńskiBruce R. DawsonB. TomeP.o. MazurM. McewenM. C. MaccaroneG. ParenteH. R. Marquez FalconN. ScharfE. KempSerguei VorobiovA. TamashiroD. Monnier RagaigneS. HarmsmaC. PfendnerA. C. RoveroC. BleveJ. AbrahamVincenzo RiziD. MartelloM. ZiolkowskiSilvia MollerachO. Martínez BravoR. MussaJ. J. BeattyAlain HervéJ. CoppensN. FazziniJulien AublinJ. F. Valdés GaliciaX. GarridoI. De MitriM. A. Leigui De OliveiraR. TcaciucF. SchroederJ. C. Dos AnjosL. VoyvodicD. Garcia-pintoOnofrio A. CatalanoU. CottiF. SánchezIván SidelnikH. CookR. D. ParsonsB. WundheilerL. NellenC. MorelloB. WilczynskaK. D. De VriesMatthias BalzerGregory R SnowA. LemiereP. H. KasperM. S. A. B. LeãoW. FulgioneO. Blanch-bigasSasa MicanovicVasiliki PavlidouR. M. KieckhaferJuan MorenoA. CrissM. PontzJ. RautenbergO. WainbergPeter L. BiermannW. C. BrownG. P. GuedesPaolo PriviteraJ. ChauvinA. F. GrilloJuan Carlos D'olivoT. PierogP. L. GhiaP. L. GhiaEun-joo AhnMichael UrbanFrançois MontanetA. SegretoGünter SiglRadomir SmidaRadomir SmidaC. Delle FratteA. AnzaloneV. De SouzaT. HuegeHernán Gonzalo AsoreyA. Parra

subject

Nuclear and High Energy Physics[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Radiación CósmicaAstronomyAstrophysics::High Energy Astrophysical Phenomenaenergy spectrumFluxFOS: Physical sciencesCosmic rayAstrophysicsElectronSURFACE DETECTORUPPER LIMITENERGIAPHOTON FRACTION01 natural sciencesSpectral lineAugerNuclear physicscosmic raysObservatorySHOWERS0103 physical sciencesHigh-Energy Cosmic Ray010306 general physicsCosmic raysCiencias ExactasPhysicsPierre Auger ObservatoryHigh Energy Astrophysical Phenomena (astro-ph.HE)010308 nuclear & particles physicsPhysics[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Spectral densityFísicaPierre Auger ObservatoryCosmic rayELECTRONS3. Good healthPierre Auger Observatory; Cosmic rays; Energy spectrumSIMULATIONExperimental High Energy PhysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGFluorescenciaARRAYFísica nuclearEnergy spectrumAstrophysics - High Energy Astrophysical PhenomenaSYSTEM

description

We report a measurement of the flux of cosmic rays with unprecedented precision and Statistics using the Pierre Auger Observatory Based on fluorescence observations in coincidence with at least one Surface detector we derive a spectrum for energies above 10(18) eV We also update the previously published energy spectrum obtained with the surface detector array The two spectra are combined addressing the systematic uncertainties and, in particular. the influence of the energy resolution on the spectral shape The spectrum can be described by a broken power law E-gamma with index gamma = 3 3 below the ankle which is measured at log(10)(E-ankle/eV) = 18 6 Above the ankle the spectrum is described by a power law with index 2 6 followed by a flux suppression, above about log(10)(E/eV) = 19 5, detected with high statistical significance.

yearjournalcountryeditionlanguage
2010-03-08
10.1016/j.physletb.2010.02.013https://hal.in2p3.fr/in2p3-00455739