A search for a dark matter annihilation signal toward the Canis major overdensity with H.E.S.S.

Aharonian F, Akhperjanian AG, De Almeida UB, Bazer-Bachi AR, Behera B, Benbow W, Bernloehr K, Boisson C, Bochow V, Borrel V, Braun IV, Brion E, Brucker J, Brun P, Buehler R, Bulik T, Buesching I, Boutelier T, Carrigan S, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Chounet LM, Clapson AC, Coignet G, Costamante L, Dalton M, 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, Giebels B, Glicenstein JF, Glueck B, Goret P, Hadjichristidis C, 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, Jung I, Katarzynski K, Kaufmann S, Kendziorra E, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Komin N, Kosack K, Lamanna G, Lenain JP, Lohse T, Marandon V, Martin JM, Martineau-Huynh O, Marcowith A, Maurin D, Mccomb TJL, Medina C, Moderski R, Moulin E, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Niemiec J, Nolan SJ, Ohm S, Olive JF, Wilhelmi EDO, Orford KJ, Osborne JL, Ostrowski M, Panter M, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, 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, Skilton JL, Sol H, Spangler D, Stawarz L, Steenkamp R, Stegmann C, Superina G, Tam PH, Tavernet JP, Terrier R, Tibolla O, van Eldik C, Vasileiadis G, Venter C, 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

Book Volume: 691

Pages Range: 175-181

Journal Issue: 1

DOI: 10.1088/0004-637X/691/1/175

Abstract

A search for a dark matter (DM) annihilation signal into γ-rays toward the direction of the Canis Major (CMa) overdensity is presented. The nature of CMa is still controversial and one scenario represents it as a dwarf galaxy, making it an interesting candidate for DM annihilation searches. A total of 9.6 hr of high-quality data were collected with the H.E.S.S. array of Imaging Atmospheric Cherenkov Telescopes, and no evidence for a very high energy γ-ray signal is found. Upper limits on the CMa dwarf galaxy mass of the order of 10 M are derived at the 95% confidence level (CL) assuming neutralino masses in the range 500 GeV-10 TeV and relatively large annihilation cross sections. Constraints on the velocity-weighted annihilation cross section 〈σv〉 are calculated for specific weakly interacting massive-particle scenarios, using a Navarro-Frenk-White model for the DM halo profile and taking advantage of numerical simulations of hierarchical structure formation. Assuming a total halo mass of 3 × 10 M, 95% CL exclusion limits of the order of 5 × 10 cm s are reached in the 500 GeV-10 TeV DM particle mass interval. © 2009. The American Astronomical Society. All rights reserved..

Authors with CRIS profile

Involved external institutions

Eberhard Karls Universität Tübingen Germany (DE) Universität Hamburg (UHH) Germany (DE) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) Humboldt-Universität zu Berlin Germany (DE) Université Joseph Fourier (UJF Grenoble 1) France (FR) Durham University United Kingdom (GB) École Polytechnique - Université Paris-Saclay France (FR) Noordwes-Universiteit / North-West University South Africa (ZA) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) Ruprecht-Karls-Universität Heidelberg Germany (DE) University of Adelaide Australia (AU) University of Leeds United Kingdom (GB) Centre CEA de Saclay (Essonne) France (FR) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Ruhr-Universität Bochum (RUB) Germany (DE) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) University of Montpellier / Université Montpellier France (FR) Université Toulouse III - Paul Sabatier France (FR) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Institute of Nuclear Physics PAN / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego PAN Poland (PL) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) University of Namibia (UNAM) Namibia (NA)

How to cite

APA:

Aharonian, F., Akhperjanian, A.G., De Almeida, U.B., Bazer-Bachi, A.R., Behera, B., Benbow, W.,... Zech, A. (2009). A search for a dark matter annihilation signal toward the Canis major overdensity with H.E.S.S. Astrophysical Journal, 691(1), 175-181. https://dx.doi.org/10.1088/0004-637X/691/1/175

MLA:

Aharonian, F., et al. "A search for a dark matter annihilation signal toward the Canis major overdensity with H.E.S.S." Astrophysical Journal 691.1 (2009): 175-181.

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