Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S.

Aharonian F, Akhperjanian AG, Anton G, De Almeida UB, Bazer-Bachi AR, Becherini Y, Behera B, Bernloehr K, Bochow A, Boisson C, Bolmont J, Borrel V, Brucker J, Brun F, Brun P, Buehler R, Bulik T, Buesching I, Boutelier T, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Chounet LM, Clapson AC, Coignet G, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Atai A, Domainko W, Drury LO, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Emmanoulopoulos D, Espigat P, Farnier C, Feinstein F, Fiasson A, Foerster A, Fontaine G, Fuessling M, Gabici S, Gallant YA, Gerard L, Gerbig D, Giebels B, Glicenstein JF, Glueck B, Goret P, Göring D, Hauser D, Hauser M, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Holleran M, Hoppe S, Horns D, Jacholkowska A, De Jager OC, Jahn C, Jung I, Katarzynski K, Katz U, Kaufmann S, Kendziorra E, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Kluzniak W, Kneiske TM, Komin N, Kosack K, Kossakowski R, Lamanna G, Lenain JP, Lohse T, Marandon V, Martin JM, Martineau-Huynh O, Marcowith A, Masbou J, Maurin D, Mccomb TJL, Medina MC, Moderski R, Moulin E, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, Wilhelmi EDO, Orford KJ, Ostrowski M, Panter M, Arribas MP, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, Reimer O, Renaud M, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Sahakian V, Santangelo A, Schlickeiser R, Schoeck FM, Schroeder R, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sikora M, Skilton JL, Sol H, Spangler D, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Superina G, Szostek A, Tam PH, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Venter L, Vialle JP, Vincent P, Vivier M, Voelk HJ, Volpe F, Wagner SJ, Ward M, Zdziarski AA, Zech A (2009)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2009

Journal

Publisher: EDP Sciences

Book Volume: 508

Pages Range: 561-564

Journal Issue: 2

DOI: 10.1051/0004-6361/200913323

Abstract

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. © ESO 2009.

Authors with CRIS profile

Involved external institutions

Dublin Institute for Advanced Studies (DIAS) Ireland (IE) University of Montpellier / Université Montpellier France (FR) Ruhr-Universität Bochum (RUB) Germany (DE) École Polytechnique - Université Paris-Saclay France (FR) Humboldt-Universität zu Berlin Germany (DE) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Durham University United Kingdom (GB) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Centre CEA de Saclay (Essonne) France (FR) Ruprecht-Karls-Universität Heidelberg Germany (DE) Université Joseph Fourier (UJF Grenoble 1) France (FR) Université Toulouse III - Paul Sabatier France (FR) Universität Hamburg (UHH) Germany (DE) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Noordwes-Universiteit / North-West University South Africa (ZA) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Poland (PL) University of Leeds United Kingdom (GB) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) University of Adelaide Australia (AU) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) Stanford University United States (USA) (US) University of Namibia (UNAM) Namibia (NA) Eberhard Karls Universität Tübingen Germany (DE) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL)

How to cite

APA:

Aharonian, F., Akhperjanian, A.G., Anton, G., De Almeida, U.B., Bazer-Bachi, A.R., Becherini, Y.,... Zech, A. (2009). Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S. Astronomy & Astrophysics, 508(2), 561-564. https://doi.org/10.1051/0004-6361/200913323

MLA:

Aharonian, F., et al. "Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S." Astronomy & Astrophysics 508.2 (2009): 561-564.

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