Authors
Hassan Abdallah, A Abramowski, F Aharonian, Faical Ait Benkhali, Ekrem Oǧuzhan Angüner, M Arakawa, M Arrieta, P Aubert, M Backes, A Balzer, M Barnard, Yvonne Becherini, J Becker Tjus, D Berge, S Bernhard, K Bernlöhr, R Blackwell, M Böttcher, C Boisson, J Bolmont, S Bonnefoy, Pol Bordas, J Bregeon, F Brun, P Brun, M Bryan, M Büchele, T Bulik, M Capasso, S Caroff, A Carosi, J Carr, Sabrina Casanova, M Cerruti, Nachiketa Chakraborty, RCG Chaves, A Chen, J Chevalier, S Colafrancesco, B Condon, J Conrad, ID Davids, J Decock, C Deil, J Devin, P Dewilt, L Dirson, A Djannati-Ataï, W Domainko, A Donath, L O’C Drury, K Dutson, J Dyks, T Edwards, K Egberts, P Eger, G Emery, J-P Ernenwein, S Eschbach, Christian Farnier, S Fegan, MV Fernandes, A Fiasson, G Fontaine, A Förster, S Funk, M Füssling, S Gabici, YA Gallant, T Garrigoux, F Gaté, G Giavitto, B Giebels, D Glawion, JF Glicenstein, D Gottschall, M-H Grondin, J Hahn, M Haupt, J Hawkes, G Heinzelmann, G Henri, G Hermann, JA Hinton, W Hofmann, C Hoischen, TL Holch, M Holler, D Horns, A Ivascenko, H Iwasaki, A Jacholkowska, Marek Jamrozy, M Janiak, D Jankowsky, F Jankowsky, M Jingo, L Jouvin, I Jung-Richardt, MA Kastendieck, K Katarzyński, M Katsuragawa, U Katz, D Kerszberg, D Khangulyan, B Khélifi, J King, S Klepser, D Klochkov, W Kluźniak, Nu Komin, K Kosack, S Krakau, M Kraus, PP Krüger, H Laffon, G Lamanna, J Lau, J-P Lees, J Lefaucheur, A Lemière, M Lemoine-Goumard, J-P Lenain, E Leser, R Liu, T Lohse, M Lorentz, R López-Coto, I Lypova, D Malyshev, V Marandon, Alexandre Marcowith, C Mariaud, R Marx, G Maurin, N Maxted, M Mayer, PJ Meintjes, M Meyer, AMW Mitchell, R Moderski, M Mohamed, L Mohrmann, K Morå, E Moulin, T Murach, S Nakashima, M de Naurois, H Ndiyavala, F Niederwanger
Publication date
2018/5/18
Journal
Physical review letters
Volume
120
Issue
20
Pages
201101
Publisher
American Physical Society
Description
Spectral lines are among the most powerful signatures for dark matter (DM) annihilation searches in very-high-energy rays. The central region of the Milky Way halo is one of the most promising targets given its large amount of DM and proximity to Earth. We report on a search for a monoenergetic spectral line from self-annihilations of DM particles in the energy range from 300 GeV to 70 TeV using a two-dimensional maximum likelihood method taking advantage of both the spectral and spatial features of the signal versus background. The analysis makes use of Galactic center observations accumulated over ten years (2004–2014) with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant -ray excess above the background is found. We derive upper limits on the annihilation cross section for monoenergetic DM lines at the level of at 1 TeV, assuming an Einasto DM profile for the …
Scholar articles
H Abdallah, A Abramowski, F Aharonian, F Ait Benkhali… - Physical review letters, 2018