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. 2008 Dec 31;101(26):261104.
doi: 10.1103/PhysRevLett.101.261104.

Energy spectrum of cosmic-ray electrons at TeV energies

F Aharonian  1 A G AkhperjanianU Barres de AlmeidaA R Bazer-BachiY BecheriniB BeheraW BenbowK BernlöhrC BoissonA BochowV BorrelI BraunE BrionJ BruckerP BrunR BruckerT BulikI BüschingT BoutelierS CarriganP M ChadwickA CharbonnierR C G ChavesA CheesebroughL M ChounetA C ClapsonG CoignetL CostamanteM DaltonB DegrangeC DeilH J DickinsonA Djannati-AtaïW DomainkoL O'C DruryF DuboisG DubusJ DyksM DyrdaK EgbertsD EmmanoulopoulosP EspigatC FarnierF FeinsteinA FiassonG FontaineM FüslingS GabiciY A GallantL GérardB GiebelsJ F GlicensteinB GlückP GoretC HadjichristidisD HauserM HauserS HeinzG HeinzelmannG HenriG HermannJ A HintonA HoffmannW HofmannM HolleranS HoppeD HornsA JacholkowskaO C de JagerI JungK KatarzyńskiS KaufmannE KendziorraM KerschhagglD KhangulyanB KhélifiD KeoghNu KominK KosackG LamannaJ P LenainT LohseV MarandonJ M MartinO Martineau-HuynhA MarcowithD MaurinT J L McCombC MedinaR ModerskiE MoulinM Naumann-GodoM de NauroisD NedbalD NekrassovJ NiemiecS J NolanS OhmJ F OliveE de Oña WilhelmiK J OrfordJ L OsborneM OstrowskiM PanterG PedalettiG PelletierP O PetrucciS PitaG PühlhoferM PunchA QuirrenbachB C RaubenheimerM RaueS M RaynerM RenaudF RiegerJ RipkenL RobS Rosier-LeesG RowellB RudakC B RultenJ RuppelV SahakianA SantangeloR SchlickeiserF M SchöckR SchröderU SchwankeS SchwarzburgS SchwemmerA ShalchiJ L SkiltonH SolD SpanglerŁ StawarzR SteenkampC StegmannG SuperinaP H TamJ P TavernetR TerrierO TibollaC van EldikG VasileiadisC VenterJ P VialleP VincentM VivierH J VölkF VolpeS J WagnerM WardA A ZdziarskiA ZechH.E.S.S. Collaboration
Affiliations

Energy spectrum of cosmic-ray electrons at TeV energies

F Aharonian et al. Phys Rev Lett. .

Abstract

The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon or satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.

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