H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies

Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anton G, Barnacka A, Barres De Almeida U, Bazer-Bachi AR, Becherini Y, Becker J, Behera B, Bernlöhr K, Bochow A, Boisson C, Bolmont J, Bordas P, Borrel V, Brucker J, Brun F, Brun P, Bulik T, Büsching I, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Chounet LM, Clapson AC, Coignet G, Conrad J, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Ataï A, Domainko W, Drury LOC, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Eger P, Espigat P, Fallon L, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fiasson A, Fontaine G, Förster A, Füßling M, Gallant YA, Gast H, Gérard L, Gerbig D, Giebels B, Glicenstein JF, Glück B, Goret P, Göring D, Hague JD, Hampf D, Hauser M, Heinz S, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Hofverberg P, Horns D, Jacholkowska A, De Jager OC, Jahn C, Jamrozy M, Jung I, Kastendieck MA, Katarzyński K, Katz U, Kaufmann S, Keogh D, Kerschhaggl M, Khangulyan D, Khélifi B, Klochkov D, Kluźniak W, Kneiske T, Komin N, Kosack K, Kossakowski R, Laffon H, Lamanna G, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Masbou J, Maurin D, Maxted N, McComb TJL, Medina MC, Méhault J, Moderski R, Moulin E, Naumann CL, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nguyen N, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, De Oña Wilhelmi E, Opitz B, Ostrowski M, Panter M, Paz Arribas M, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Pühlhofer G, Punch M, Quirrenbach A, Raue M, Rayner SM, Reimer A, Reimer O, Renaud M, De Los Reyes R, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Ryde F, Sahakian V, Santangelo A, Schlickeiser R, Schöck FM, Schönwald A, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sikora M, Skilton JL, Sol H, Spengler G, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Sushch I, Szostek A, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, Valerius K, Van Eldik C, van Eldik C, Vasileiadis G, Venter C, Vialle JP, Viana A, Vincent P, Vivier M, Völk HJ, Volpe F, Vorobiov S, Vorster M, Wagner SJ, Ward M, Wierzcholska A, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS (2011)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Publisher: Elsevier

Book Volume: 34

Pages Range: 608-616

Journal Issue: 8

DOI: 10.1016/j.astropartphys.2010.12.006

Abstract

The Sculptor and Carina dwarf spheroidal galaxies were observed with the H.E.S.S. Cherenkov telescope array between January 2008 and December 2009. The data sets consist of a total of 11.8 h and 14.8 h of high quality data, respectively. No gamma-ray signal was detected at the nominal positions of these galaxies above 220 GeV and 320 GeV, respectively. Upper limits on the gamma-ray fluxes at 95% CL assuming two forms for the spectral energy distribution (a power law shape and one derived from dark matter annihilation) are obtained at the level of 10-10 cm s in the TeV range. Constraints on the velocity weighted dark matter particle annihilation cross section for both Sculptor and Carina dwarf galaxies range from 〈σv〉 ∼ 10 cm s down to 〈σv〉 ∼ 10 cm s depending on the dark matter halo model used. Possible enhancements of the gamma-ray flux are studied: the Sommerfeld effect, which is found to exclude some dark matter particle masses, the internal Bremsstrahlung and clumps in the dark-matter halo distributions. © 2011 Published by Elsevier B.V.

Authors with CRIS profile

Involved external institutions

University of Montpellier / Université Montpellier France (FR) Commissariat à l'énergie atomique France (FR) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) École Polytechnique - Université Paris-Saclay France (FR) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC) France (FR) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) Universität Hamburg (UHH) Germany (DE) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) University of Warsaw / Uniwersytet Warszawski Poland (PL) Eberhard Karls Universität Tübingen Germany (DE) Ruhr-Universität Bochum (RUB) Germany (DE) Humboldt-Universität zu Berlin Germany (DE) University of Leeds United Kingdom (GB) University of Adelaide Australia (AU) Ruprecht-Karls-Universität Heidelberg Germany (DE) Université Joseph Fourier (UJF Grenoble 1) France (FR) Institute of Nuclear Physics PAN / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego PAN Poland (PL) Université Toulouse III - Paul Sabatier France (FR) National Academy of Sciences of the Republic of Armenia (NAS RA) / Հայաստանի Հանրապետության գիտությունների ազգային ակադեմիա, ՀՀ ԳԱԱ Armenia (AM) Durham University United Kingdom (GB) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) University of Namibia (UNAM) Namibia (NA) Noordwes-Universiteit / North-West University South Africa (ZA) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum Sweden (SE) Medizinische Universität Innsbruck Austria (AT) University of Leicester United Kingdom (GB) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE)

How to cite

APA:

Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G., Barnacka, A.,... Zechlin, H.S. (2011). H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies. Astroparticle Physics, 34(8), 608-616. https://dx.doi.org/10.1016/j.astropartphys.2010.12.006

MLA:

Abramowski, A., et al. "H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies." Astroparticle Physics 34.8 (2011): 608-616.

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