| Literature DB >> 27661677 |
H Abdallah1, A Abramowski2, F Aharonian3,4,5, F Ait Benkhali3, A G Akhperjanian5,6, E Angüner7, M Arrieta8, P Aubert9, M Backes10, A Balzer11, M Barnard1, Y Becherini12, J Becker Tjus13, D Berge14, S Bernhard15, K Bernlöhr3,7, E Birsin7, R Blackwell16, M Böttcher1, C Boisson8, J Bolmont17, P Bordas18, J Bregeon19, F Brun20, P Brun20, M Bryan11, T Bulik21, M Capasso22, J Carr23, S Casanova3,24, N Chakraborty3, R Chalme-Calvet17, R C G Chaves19, A Chen25, J Chevalier9, M Chrétien17, S Colafrancesco25, G Cologna26, B Condon27, J Conrad28,29, C Couturier17, Y Cui18, I D Davids1,10, B Degrange22, C Deil3, P deWilt16, A Djannati-Ataï30, W Domainko3, A Donath3, L O'C Drury4, G Dubus31, K Dutson32, J Dyks33, M Dyrda24, T Edwards3, K Egberts34, P Eger3, J-P Ernenwein35, S Eschbach35, C Farnier28, S Fegan22, M V Fernandes2, A Fiasson9, G Fontaine22, A Förster3, S Funk36, M Füßling34, S Gabici30, M Gajdus7, Y A Gallant19, T Garrigoux1, G Giavitto37, B Giebels22, J F Glicenstein20, D Gottschall18, A Goyal38, M-H Grondin27, M Grudzińska21, D Hadasch15, J Hahn3, J Hawkes16, G Heinzelmann2, G Henri31, G Hermann3, O Hervet8, A Hillert3, J A Hinton3,32, W Hofmann3, C Hoischen37, M Holler22, D Horns2, A Ivascenko1, A Jacholkowska17, M Jamrozy38, M Janiak33, D Jankowsky36, F Jankowsky26, M Jingo25, T Jogler36, L Jouvin30, I Jung-Richardt36, M A Kastendieck2, K Katarzyński39, U Katz36, D Kerszberg17, B Khélifi30, M Kieffer17, J King3, S Klepser37, D Klochkov18, W Kluźniak33, D Kolitzus15, Nu Komin25, K Kosack20, S Krakau13, M Kraus36, F Krayzel9, P P Krüger1, H Laffon27, G Lamanna9, J Lau16, J-P Lees40, J Lefaucheur8, V Lefranc20, A Lemière30, M Lemoine-Goumard27, J-P Lenain17, E Leser34, T Lohse7, M Lorentz20, R Lui3, I Lypova37, V Marandon3, A Marcowith19, C Mariaud22, R Marx3, G Maurin9, N Maxted16, M Mayer34, P J Meintjes41, U Menzler13, M Meyer28, A M W Mitchell3, R Moderski33, M Mohamed26, K Morå28, E Moulin20, T Murach7, M de Naurois22, F Niederwanger14, J Niemiec24, L Oakes7, H Odaka3, S Ohm37, S Öttl15, M Ostrowski38, I Oya7, M Padovani42, M Panter3, R D Parsons3, M Paz Arribas7, N W Pekeur1, G Pelletier31, P-O Petrucci31, B Peyaud20, S Pita30, H Poon3, D Prokhorov12, H Prokoph12, G Pühlhofer18, M Punch30, A Quirrenbach26, S Raab36, A Reimer15, O Reimer15, M Renaud19, R de Los Reyes3, F Rieger3, C Romoli4, S Rosier-Lees9, G Rowell16, B Rudak33, C B Rulten8, V Sahakian5,6, D Salek43, D A Sanchez9, A Santangelo18, M Sasaki18, R Schlickeiser13, F Schüssler20, A Schulz37, U Schwanke7, S Schwemmer26, A S Seyffert1, N Shafi25, R Simoni14, H Sol8, F Spanier1, G Spengler28, F Spieß2, L Stawarz38, R Steenkamp10, C Stegmann34,37, F Stinzing36, K Stycz37, I Sushch44, J-P Tavernet17, T Tavernier30, A M Taylor4, R Terrier30, M Tluczykont2, C Trichard9, R Tuffs3, J van der Walt1, C van Eldik36, B van Soelen41, G Vasileiadis19, J Veh36, C Venter44, A Viana3, P Vincent17, J Vink11, F Voisin16, H J Völk3, T Vuillaume9, Z Wadiasingh44, S J Wagner26, P Wagner7, R M Wagner28, R White3,32, A Wierzcholska38, P Willmann36, A Wörnlein36, D Wouters20, R Yang3, V Zabalza3,32, D Zaborov22, M Zacharias26, A A Zdziarski33, A Zech8, F Zefi22, A Ziegler36, N Żywucka38.
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} cm^{3} s^{-1} in the W^{+}W^{-} channel for a DM particle mass of 1.5 TeV, and 2×10^{-26} cm^{3} 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.Entities:
Year: 2016 PMID： 27661677 DOI： 10.1103/PhysRevLett.117.111301
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161