Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal

Aharonian F, Akhperjanian AG, Bazer-Bachi AR, Beilicke M, Benbow W, Berge D, Bernloehr K, Boisson C, Bolz O, Borrel V, Braun IV, Brion E, Brown AM, Buehler R, Buesching I, Boutelier T, Carrigan S, Chadwick PM, Chounet LM, Coignet G, Cornils R, Costamante L, Degrange B, Dickinson HJ, Djannati-Ataie A, Drury LO, Dubus G, Egberts K, Emmanoulopoulos D, Espigat P, Farnier C, Feinstein F, Ferrero E, Fiasson A, Fontaine G, Funk S, Funk S, Fuessling M, Gallant YA, Giebels B, Glicenstein JF, Glueck B, Goret P, Hadjichristidis C, Hauser D, Hauser M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Holleran M, Hoppe S, Horns D, Jacholkowska A, De Jager OC, Kendziorra E, Kerschhaggl M, Khelifi B, Komin N, Kosack K, Lamanna G, Latham IJ, Le Gallou R, Lemiere A, Lemoine-Goumard M, Lohse T, Martin JM, Martineau-Huynh O, Marcowith A, Masterson C, Maurin G, Mccomb TJL, Moulin E, De Naurois M, Nedbal D, Nolan SJ, Noutsos A, Nuss E, Olive JP, Orford KJ, Osborne JL, Panter M, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Ranchon S, Raubenheimer BC, Raue M, Rayner SM, Ripken J, Rob L, Rolland L, Rosier-Lees S, Rowell G, Sahakian V, Santangelo A, Sauge L, Schlenker S, Schlickeiser R, Schroeder R, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sol H, Spangler D, Spanier F, Steenkamp R, Stegmann C, Superina G, Tam PH, Tavernet JP, Terrier R, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Vialle JP, Vincent P, Vivier M, Voelk HJ, Wagner SJ, Ward M (2008)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2008

Journal

Publisher: Elsevier

Book Volume: 29

Pages Range: 55-62

Journal Issue: 1

DOI: 10.1016/j.astropartphys.2007.11.007

Abstract

Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data selection. There is no evidence for a very high energy γ-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 × 10 cm s above 250 GeV has been derived. Constraints on the velocity-weighted cross-section 〈 σ v 〉 are calculated in the framework of dark matter particle annihilation using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different models have been investigated encompassing a large class of halo types. A 95% CL exclusion limit on 〈 σ v 〉 of the order of 2 × 10 cm s is obtained for a core profile in the 100 GeV-1 TeV neutralino mass range. © 2007 Elsevier B.V. All rights reserved.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) University of Montpellier / Université Montpellier France (FR) École Polytechnique - Université Paris-Saclay France (FR) Laboratoire d'Annecy le Vieux de Physique des Particules France (FR) PSL Research University / Université de recherche Paris Sciences et Lettres France (FR) Universität Hamburg (UHH) Germany (DE) Ruprecht-Karls-Universität Heidelberg Germany (DE) Agence Parisienne du Climat (APC) France (FR) Université Toulouse III - Paul Sabatier France (FR) Centre CEA de Saclay (Essonne) France (FR) Durham University United Kingdom (GB) Université Joseph Fourier (UJF Grenoble 1) France (FR) Humboldt-Universität zu Berlin Germany (DE) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) Noordwes-Universiteit / North-West University South Africa (ZA) University of Namibia (UNAM) Namibia (NA) Ruhr-Universität Bochum (RUB) Germany (DE) European Associated Laboratory for Gamma-Ray Astronomy France (FR) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ)

How to cite

APA:

Aharonian, F., Akhperjanian, A.G., Bazer-Bachi, A.R., Beilicke, M., Benbow, W., Berge, D.,... Ward, M. (2008). Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal. Astroparticle Physics, 29(1), 55-62. https://doi.org/10.1016/j.astropartphys.2007.11.007

MLA:

Aharonian, F., et al. "Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal." Astroparticle Physics 29.1 (2008): 55-62.

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