Search for Dark Matter Annihilations towards the Inner Galactic Halo from 10 Years of Observations with H.E.S.S
Journal
Date Issued
2016
Author(s)
Abdallah, H.
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Abramowski, A.
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Aharonian, F.
•
Ait Benkhali, F.
•
Akhperjanian, A. G.
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Angüner, E.
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Arrieta, M.
•
Aubert, P.
•
Backes, M.
•
Balzer, A.
•
Barnard, M.
•
Becherini, Y.
•
Becker Tjus, J.
•
Berge, D.
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Bernhard, S.
•
Bernlöhr, K.
•
Birsin, E.
•
Blackwell, R.
•
Böttcher, M.
•
Boisson, C.
•
Bolmont, J.
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Bordas, P.
•
Bregeon, J.
•
Brun, F.
•
Brun, P.
•
Bryan, M.
•
Bulik, T.
•
Capasso, M.
•
Carr, J.
•
Casanova, S.
•
Chakraborty, N.
•
Chalme-Calvet, R.
•
Chaves, R. C. G.
•
Chen, A.
•
Chevalier, J.
•
Chrétien, M.
•
Colafrancesco, S.
•
Cologna, G.
•
Condon, B.
•
Conrad, J.
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Couturier, C.
•
Cui, Y.
•
Davids, I. D.
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Degrange, B.
•
Deil, C.
•
deWilt, P.
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Djannati-Ataï, A.
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Domainko, W.
•
Donath, A.
•
Drury, L. O'C.
•
Dubus, G.
•
Dutson, K.
•
Dyks, J.
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Dyrda, M.
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Edwards, T.
•
Egberts, K.
•
Eger, P.
•
Ernenwein, J. -P.
•
Eschbach, S.
•
Farnier, C.
•
Fegan, S.
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Fernandes, M. V.
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Fiasson, A.
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Fontaine, G.
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Förster, A.
•
Funk, S.
•
Füßling, M.
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Gabici, S.
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Gajdus, M.
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Gallant, Y. A.
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Garrigoux, T.
•
Giavitto, G.
•
Giebels, B.
•
Glicenstein, J. F.
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Gottschall, D.
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Goyal, A.
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Grondin, M. -H.
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Grudzińska, M.
•
Hadasch, D.
•
Hahn, J.
•
Hawkes, J.
•
Heinzelmann, G.
•
Henri, G.
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Hermann, G.
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Hervet, O.
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Hillert, A.
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Hinton, J. A.
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Hofmann, W.
•
Hoischen, C.
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Holler, M.
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Horns, D.
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Ivascenko, A.
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Jacholkowska, A.
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Jamrozy, M.
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Janiak, M.
•
Jankowsky, D.
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Jankowsky, F.
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Jingo, M.
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Jogler, T.
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Jouvin, L.
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Jung-Richardt, I.
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Kastendieck, M. A.
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Katarzyński, K.
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Katz, U.
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Kerszberg, D.
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Khélifi, B.
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Kieffer, M.
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King, J.
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Klepser, S.
•
Klochkov, D.
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Kluźniak, W.
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Kolitzus, D.
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Komin, Nu.
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Kosack, K.
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Krakau, S.
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Kraus, M.
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Krayzel, F.
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Krüger, P. P.
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Laffon, H.
•
Lamanna, G.
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Lau, J.
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Lees, J. -P.
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Lefaucheur, J.
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Lefranc, V.
•
Lemière, A.
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Lemoine-Goumard, M.
•
Lenain, J. -P.
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Leser, E.
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Lohse, T.
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Lorentz, M.
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Lui, R.
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Lypova, I.
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Marandon, V.
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Marcowith, A.
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Mariaud, C.
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Marx, R.
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Maurin, G.
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Maxted, N.
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Mayer, M.
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Meintjes, P. J.
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Menzler, U.
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Meyer, M.
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Mitchell, A. M. W.
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Moderski, R.
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Mohamed, M.
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Morâ, K.
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Moulin, E.
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Murach, T.
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de Naurois, M.
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Niederwanger, F.
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Niemiec, J.
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Oakes, L.
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Odaka, H.
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Ohm, S.
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Öttl, S.
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Ostrowski, M.
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Oya, I.
•
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Panter, M.
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Parsons, R. D.
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Paz Arribas, M.
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Pekeur, N. W.
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Pelletier, G.
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Petrucci, P. -O.
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Peyaud, B.
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Pita, S.
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Poon, H.
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Prokhorov, D.
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Prokoph, H.
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Pühlhofer, G.
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Punch, M.
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Quirrenbach, A.
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Raab, S.
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Reimer, A.
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Reimer, O.
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Renaud, M.
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de los Reyes, R.
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Rieger, F.
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Romoli, C.
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Rosier-Lees, S.
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Rowell, G.
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Rudak, B.
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Rulten, C. B.
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Sahakian, V.
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Salek, D.
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Sanchez, D. A.
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Santangelo, A.
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Sasaki, M.
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Schlickeiser, R.
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Schüssler, F.
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Schulz, A.
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Schwanke, U.
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Schwemmer, S.
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Seyffert, A. S.
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Shafi, N.
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Simoni, R.
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Sol, H.
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Spanier, F.
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Spengler, G.
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Spieß, F.
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Stawarz, L.
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Steenkamp, R.
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Stegmann, C.
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Stinzing, F.
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Stycz, K.
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Sushch, I.
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Tavernet, J. -P.
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Tavernier, T.
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Taylor, A. M.
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Terrier, R.
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Tluczykont, M.
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Trichard, C.
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Tuffs, R.
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van der Walt, J.
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van Eldik, C.
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van Soelen, B.
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Vasileiadis, G.
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Veh, J.
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Venter, C.
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Viana, A.
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Vincent, P.
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Vink, J.
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Voisin, F.
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Völk, H. J.
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Vuillaume, T.
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Wadiasingh, Z.
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Wagner, S. J.
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Wagner, P.
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Wagner, R. M.
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White, R.
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Wierzcholska, A.
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Willmann, P.
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Wörnlein, A.
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Wouters, D.
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Yang, R.
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Zabalza, V.
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Zaborov, D.
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Zacharias, M.
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Zdziarski, A. A.
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Zech, A.
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Zefi, F.
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Ziegler, A.
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Żywucka, N.
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H. E. S. S. Collaboration
Abstract
The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using γ-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004–2014), and does not show any significant γ-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section ⟨σv⟩. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach ⟨σv⟩ values of 6×10−26 cm3 s−1 in the W+W− channel for a DM particle mass of 1.5 TeV, and 2×10−26 cm3 s−1 in the τ+τ− channel for a 1 TeV mass. For the first time, ground-based γ-ray observations have reached sufficient sensitivity to probe ⟨σv⟩ values expected from the thermal relic density for TeV DM particles.
Volume
117
Issue
11
Start page
111301
Issn Identifier
0031-9007
Ads BibCode
2016PhRvL.117k1301A
Rights
open.access
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