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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents



  history
ID: 464864.0, MPI für Kernphysik / High-Energy Astrophysics
Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S.
Authors:Acero, F.; Aharonian, F.; Akhperjanian, A. G.; Anton, G.; de Almeida, U. B.; Bazer-Bachi, A. R.; Becherini, Y.; Behera, B.; Bernlöhr, K.; Bochow, A.; Boisson, C.; Bolmont, J.; Borrel, V.; Brucker, J.; Brun, F.; Brun, P.; Bühler, R.; Bulik, T.; Busching, I.; Boutelier, T.; Chadwick, P. M.; Charbonnier, A.; Chaves, R. C. G.; Cheesebrough, A.; Chounet, L. M.; Clapson, A. C.; Coignet, G.; Dalton, M.; Daniel, M. K.; Davids, I. D.; Degrange, B.; Deil, C.; Dickinson, H. J.; Djannati-Atai, A.; Domainko, W.; Drury, L. O.; Dubois, F.; Dubus, G.; Dyks, J.; Dyrda, M.; Egberts, K.; Emmanoulopoulos, D.; Espigat, P.; Farnier, C.; Fegan, S.; Feinstein, F.; Fiasson, A.; Foerster, A.; Fontaine, G.; Fussling, M.; Gabici, S.; Gallant, Y. A.; Gerard, L.; Gerbig, D.; Giebels, B.; Glicenstein, J. F.; Gluck, B.; Goret, P.; Goring, D.; Hauser, D.; Hauser, M.; Heinz, S.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hoffmann, A.; Hofmann, W.; Hofverberg, P.; Hoppe, S.; Horns, D.; Jacholkowska, A.; de Jager, O. C.; Jahn, C.; Jung, I.; Katarzynski, K.; Katz, U.; Kaufmann, S.; Kerschhaggl, M.; Khangulyan, D.; Khelifi, B.; Keogh, D.; Klochkov, D.; Kluzniak, W.; Kneiske, T.; Komin, N.; Kosack, K.; Kossakowski, R.; Lamanna, G.; Lenain, J. P.; Lohse, T.; Marandon, V.; Martineau-Huynh, O.; Marcowith, A.; Masbou, J.; Maurin, D.; McComb, T. J. L.; Medina, M. C.; Mehault, J.; Moderski, R.; Moulin, E.; Naumann-Godo, M.; de Naurois, M.; Nedbal, D.; Nekrassov, D.; Nicholas, B.; Niemiec, J.; Nolan, S. J.; Ohm, S.; Olive, J. F.; Wilhelmi, E. D.; Orford, K. J.; Ostrowski, M.; Panter, M.; Arribas, M. P.; Pedaletti, G.; Pelletier, G.; Petrucci, P. O.; Pita, S.; Puhlhofer, G.; Punch, M.; Quirrenbach, A.; Raubenheimer, B. C.; Raue, M.; Rayner, S. M.; Reimer, O.; Renaud, M.; Rieger, F.; Ripken, J.; Rob, L.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Ruppel, J.; Sahakian, V.; Santangelo, A.; Schlickeiser, R.; Schock, F. M.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Shalchi, A.; Sikora, M.; Skilton, J. L.; Sol, H.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Stinzing, F.; Superina, G.; Szostek, A.; Tam, P. H.; Tavernet, J. P.; Terrier, R.; Tibolla, O.; Tluczykont, M.; van Eldik, C.; Vasileiadis, G.; Venter, C.; Venter, L.; Vialle, J. P.; Vincent, P.; Vivier, M.; Völk, H. J.; Volpe, F.; Wagner, S. J.; Ward, M.; Zdziarski, A. A.; Zech, A.
Language:English
Date of Publication (YYYY-MM-DD):2009-12
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A&A
Volume:508
Issue / Number:2
Start Page:561
End Page:564
Review Status:not specified
Audience:Experts Only
Abstract / Description:The measurement of an excess in the cosmic-ray electron spectrum between 300 and 800 GeV by the ATIC experiment has - together with the PAMELA detection of a rise in the positron fraction up to ≈100 GeV - motivated many interpretations in terms of dark matter scenarios; alternative explanations assume a nearby electron source like a pulsar or supernova remnant. Here we present a measurement of the cosmic-ray electron spectrum with H.E.S.S. starting at 340 GeV. While the overall electron flux measured by H.E.S.S. is consistent with the ATIC data within statistical and systematic errors, the H.E.S.S. data exclude a pronounced peak in the electron spectrum as suggested for interpretation by ATIC. The H.E.S.S. data follow a power-law spectrum with spectral index of 3.0±0.1(stat.)± 0.3(syst.), which steepens at about 1 TeV.
Free Keywords:cosmic rays, methods: data analysis
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of W. Hofmann/Experimental High-Energy Astrophysics (M. Panter, G. Hermann)
MPI für Kernphysik/Group of W. Hofmann/High Energy Astrophysics (F. Aharonian)
External Affiliations:[Nedbal, D.; Rob, L.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CR-18000 Prague, Czech Republic.; [Acero, F.; Farnier, C.; Feinstein, F.; Gallant, Y. A.; Marcowith, A.; Mehault, J.; Vasileiadis, G.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, F-34095 Montpellier 5, France.; [Akhperjanian, A. G.; Sahakian, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.; [Bazer-Bachi, A. R.; Borrel, V.; Olive, J-F.] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France.; [Heinzelmann, G.; Horns, D.; Kneiske, T.; Ripken, J.; Tluczykont, M.] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany.; [Bernloehr, K.; Dalton, M.; Fuessling, M.; Kerschhaggl, M.; Lohse, T.; Arribas, M. Paz; Schwanke, U.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.; [Boisson, C.; Lenain, J. -P.; Medina, M. C.; Moulin, E.; Sol, H.; Venter, L.; Zech, A.] Univ Paris Diderot, CNRS, Observ Paris, Lab Univers & Theories, F-92190 Meudon, France.; [Brun, P.; Glicenstein, J. F.; Goret, P.; Komin, Nu.; Vivier, M.] CEA, CE Saclay, Inst Rech Lois Fondament Univers, La Direct Sci Mat, F-91191 Gif Sur Yvette, France.; [de Almeida, U. Barres; Chadwick, P. M.; Cheesebrough, A.; Daniel, M. K.; Dickinson, H. J.; Keogh, D.; McComb, T. J. L.; Nolan, S. J.; Orford, K. J.; Rayner, S. M.; Rulten, C. B.; Ward, M.] Univ Durham, Dept Phys, Durham DH1 3LE, England.; [Buesching, I.; Davids, I. D.; de Jager, O. C.; Raubenheimer, B. C.; Venter, C.] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa.; [Chounet, L. -M.; Degrange, B.; Fegan, S.; Fontaine, G.; Giebels, B.; Khelifi, B.; Naumann-Godo, M.; Superina, G.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.; [Coignet, G.; Dubois, F.; Fiasson, A.; Kossakowski, R.; Lamanna, G.; Masbou, J.; Rosier-Lees, S.; Vialle, J. P.] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.; [Becherini, Y.; Djannati-Atai, A.; Espigat, P.; Gerard, L.; Marandon, V.; Pita, S.; Punch, M.; Renaud, M.; Terrier, R.] Univ Paris 07, CNRS, UMR 7164, CEA,Observ Paris, F-75205 Paris 13, France.; [Aharonian, F.; Drury, L. O'C.; Gabici, S.] Dublin Inst Adv Studies, Dublin 2, Ireland.; [Behera, B.; Emmanoulopoulos, D.; Hauser, D.; Hauser, M.; Kaufmann, S.; Pedaletti, G.; Puehlhofer, G.; Quirrenbach, A.; Schwemmer, S.; Tam, P. H.; Wagner, S. J.] Univ Heidelberg, D-69117 Heidelberg, Germany.; [Anton, G.; Brucker, J.; Glueck, B.; Goering, D.; Heinz, S.; Jahn, C.; Jung, I.; Katz, U.; Schoeck, F. M.; Stegmann, C.; Stinzing, F.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.; [Boutelier, T.; Dubus, G.; Henri, G.; Pelletier, G.; Petrucci, P. -O.; Szostek, A.] Univ Grenoble 1, CNRS, Astrophys Lab, Inst Natl Sci Univers, F-38041 Grenoble 9, France.; [Hoffmann, A.; Klochkov, D.; Puehlhofer, G.; Santangelo, A.; Schwarzburg, S.] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany.; [Bolmont, J.; Brun, F.; Charbonnier, A.; Jacholkowska, A.; Martineau-Huynh, O.; Maurin, D.; de Naurois, M.; Tavernet, J. -P.; Vincent, P.] Univ Paris 07, CNRS, Univ Paris 06, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris 5, France.; [Gerbig, D.; Ruppel, J.; Schlickeiser, R.; Shalchi, A.] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany.; [Davids, I. D.; Steenkamp, R.] Univ Namibia, Windhoek, Namibia.; [Ostrowski, M.; Stawarz, L.; Szostek, A.] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland.; [Dyks, J.; Kluzniak, W.; Moderski, R.; Rudak, B.; Sikora, M.; Zdziarski, A. A.] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland.; [Hinton, J. A.; Skilton, J. L.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.; [Nicholas, B.; Rowell, G.] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.; [Katarzynski, K.] Nicholas Copernicus Univ, Torun Ctr Astron, PL-87100 Torun, Poland.; [Dyrda, M.; Niemiec, J.] Inst Fizyki Jadrowej PAN, PL-31342 Krakow, Poland.; [Bulik, T.] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland.; [Raue, M.; Rieger, F.] European Associated Lab Gamma Ray Astron, F-75252 Paris 5, France.; [Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.; [Reimer, O.] Stanford Univ, KIPAC Kavli Inst Particle Phys & Cosmol, Stanford, CA 94305 USA.
Identifiers:DOI:http://dx.doi.org/10.1051/0004-6361/200913323
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