Energy Spectrum of Cosmic-Ray Electrons at TeV Energies

Aharonian, F.; Akhperjanian, A. G.; Almeida, U. Barres de; Bazer‐Bachi, A. R.; Becherini, Y.; Behera, B.; Benbow, W.; Bernlöhr, K.; Boisson, C.; Bochow, A.; Borrel, V.; Braun, I.; Brion, E.; Brucker, J.; Brun, P.; Bühler, R.; Bulik, T.; Büsching, I.; Boutelier, T.; Carrigan, S.; Chadwick, P. M.; Charbonnier, A.; Chaves, R. C. G.; Cheesebrough, A.; Chounet, L.‐M.; Clapson, A. C.; Coignet, G.; Costamante, L.; Dalton, M.; Degrange, B.; Deil, C.; Dickinson, H. J.; Djannati-Ataı̈, A.; Domainko, W.; Drury, L. O’C.; Dubois, F.; Dubus, G.; Dyks, J.; Dyrda, M.; Egberts, K.; Emmanoulopoulos, D.; Espigat, P.; Farnier, C.; Feinstein, F.; Fiaßon, A.; Förster, A.; Fontaine, G.; Füßling, M.; Gabici, S.; Gallant, Y. A.; Gérard, L.; Giebels, B.; Glicenstein, J. F.; Glück, B.; Goret, P.; Hadjichristidis, C.; Hauser, D.; Häuser, M.; Heinz, Sebastian; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hoffmann, A.; Hofmann, W.; Holleran, M.; Hoppe, S.; Horns, D.; Jachołkowska, A.; Jager, O. C. de; Jung, I.; Katarzyński, K.; Kaufmann, S.; Kendziorra, E.; Kerschhaggl, M.; Khangulyan, D.; Khélifi, B.; Keogh, D.; Komin, Nu.; Kosack, K.; Lamanna, G.; Lenain, J.-P.; Lohse, T.; Marandon, V.; Martin, Jean‐Michel; Martineau‐Huynh, O.; Marcowith, A.; Maurin, D.; McComb, T. J. L.; Medina, C.; Moderski, R.; Moulin, E.; Naumann-Godó, M.; Naurois, M. de; Nedbal, D.; Nekrassov, D.; Niemiec, J.; Nolan, S. J.; Ohm, S.; Olive, J. F.; Wilhelmi, E. de Oña; Orford, K. J.; Osborne, J. L.; Ostrowski, M.; Panter, M.; Pedaletti, G.; Pelletier, G.; Petrucci, Pierre-Olivier; Pita, S.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Raubenheimer, B. C.; Raue, M.; Rayner, S. M.; Renaud, M.; Rieger, Frank; Ripken, J.; Rob, L.; Rosier-Lees, S.; Rowell, Gavin; Rudak, B.; Rulten, C. B.; Ruppel, J.; Sahakian, V.; Santangelo, A.; Schlickeiser, R.; Schöck, F. M.; Schröder, R.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Shalchi, A.; Skilton, J. L.; Sol, H.; Spangler, D.; Stawarz, Ł.; Steenkamp, R.; Stegmann, C.; Superina, G.; Tam, P. H. T.; Tavernet, J.‐P.; Terrier, R.; Tibolla, O.; Eldik, C. van; Vasileiadis, G.; Venter, C.; Vialle, J. P.; Vincent, P.; Vivier, M.; Völk, H. J.; Volpe, F.; Wagner, S. J.; Ward, M. J.; Zdziarski, A. A.; Zech, A.

doi:10.1103/physrevlett.101.261104

articlePhysical Review LettersDec 30, 2008BRONZE OA

Energy Spectrum of Cosmic-Ray Electrons at TeV Energies

FAF. Aharonian AGA. G. Akhperjanian UBU. Barres de Almeida ARA. R. Bazer‐Bachi YBY. Becherini

Dublin Institute For Advanced Studies · Max Planck Institute for Nuclear Physics · +35 more institutions

PubMed

Indexed inarxivcrossrefpubmed

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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Topics & keywords

Topics

Keywords

Physics
Cherenkov radiation
Electron
Cosmic ray
Range (aeronautics)
Astrophysics
Energy spectrum
Gamma ray

UN Sustainable Development Goals

Affordable and clean energy

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Funding

SA
Science and Technology Facilities Council
Awards: PP/E001319/1, ST/F002963/1