| Title: |
Searches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with HESS |
| Authors: |
Abdalla, H; Aharonian, F; Benkhali, FA; Anguner, EO; Arakawa, M; Arcaro, C; Armand, C; Arrieta, M; Backes, M; Barnard, M; Becherini, Y; Tjus, JB; Berge, D; Bernhard, S; Bernloehr, K; Blackwell, R; Bottcher, M; Boisson, C; Bolmont, J; Bonnefoy, S; Bordas, P; Bregeon, J; Brun, F; Brun, P; Bryan, M; Buechele, M; Bulik, T; Bylund, T; Capasso, M; Caroff, S; Carosi, A; Casanova, S; Cerruti, M; Chakraborty, N; Chandra, S; Chaves, RCG; Chen, A; Colafrancesco, S; Condon, B; Davids, ID; Deil, C; Devin, J; deWilt, P; Dirson, L; Djannati-Atai, A; Dmytriiev, A; Donath, A; Doroshenko, V; Drury, LO; Dyks, J; Egberts, K; Emery, G; Ernenwein, J-P; Eschbach, S; Fegan, S; Fiasson, A; Fontaine, G; Funk, S; Fuessling, M; Gabici, S; Gallant, YA; Gate, F; Giavitto, G; Glawion, D; Glicenstein, JF; Gottschall, D; Grondin, M-H; Hahn, J; Haupt, M; Heinzelmann, G; Henri, G; Hermann, G; Hinton, JA; Hofmann, W; Hoischen, C; Holch, TL; Holler, M; Horns, D; Huber, D; Iwasaki, H; Jacholkowska, A; Jamrozy, M; Jankowsky, D; Jankowsky, F; Jouvin, L; Jung-Richardt, I; Kastendieck, MA; Katarzynski, K; Katsuragawa, M; Katz, U; Kerszberg, D; Khangulyan, D; Khelifi, B; King, J; Klepser, S; Kluzniak, W; Komin, N; Kosack, K; Krakau, S; Kraus, M; Kruger, PP; Lamanna, G; Lau, J; Lefaucheur, J; Lemiere, A; Lemoine-Goumard, M; Lenain, J-P; Leser, E; Lohse, T; Lorentz, M; Lopez-Coto, R; Lypova, I; Malyshev, D; Marandon, V; Marcowith, A; Mariaud, C; Marti-Devesa, G; Marx, R; Maurin, G; Meintjes, PJ; Mitchell, AMW; Moderski, R; Mohamed, M; Mohrmann, L; Moulin, E; Murach, T; Nakashima, S; de Naurois, M; Ndiyavala, H; Niederwanger, F; Niemiec, J; Oakes, L; O'Brien, P; Odaka, H; Ohm, S; Ostrowski, M; Oya, I; Padovani, M; Panter, M; Parsons, RD; Perennes, C; Petrucci, P-O; Peyaud, B; Piel, Q; Pita, S; Poireau, V; Noel, AP; Prokhorov, DA; Prokoph, H; Puehlhofer, G; Punch, M; Quirrenbach, A; Raab, S; Rauth, R; Reimer, A; Reimer, O; Renaud, M; Rieger, F; Rinchiuso, L; Romoli, C; Rowell, G; Rudak, B; Ruiz-Velasco, E; Sahakian, V; Saito, S; Sanchez, DA; Santangelo, A; Sasaki, M; Schlickeiser, R; Schussler, F; Schulz, A; Schwanke, U; Schwemmer, S; Seglar-Arroyo, M; Senniappan, M; Seyffert, AS; Shafi, N; Shilon, I; Shiningayamwe, K; Simoni, R; Sinha, A; Sol, H; Spanier, F; Specovius, A; Spir-Jacob, M; Stawarz, L; Steenkamp, R; Stegmann, C; Steppa, C; Takahashi, T; Tavernet, J-P; Tavernier, T; Taylor, AM; Terrier, R; Tibaldo, L; Tiziani, D; Tluczykont, M; Trichard, C; Tsirou, M; Tsuji, N; Tuffs, R; Uchiyama, Y; van der Walt, DJ; van Eldik, C; van Rensburg, C; van Soelen, B; Vasileiadis, G; Veh, J; Venter, C; Viana, A; Vincent, P; Vink, J; Voisin, F; Voelk, HJ; Vuillaume, T; Wadiasingh, Z; Wagner, SJ; Wagner, RM; White, R; Wierzcholska, A; Yang, R; Zaborov, D; Zacharias, M; Zanin, R; Zdziarski, A; Zech, A; Zefi, F; Ziegler, A; Zorn, J; Zywucka, N; Cirelli, M; Panci, P; Sala, F; Silk, J; Taoso, M |
| Publisher Information: |
IOP Publishing |
| Publication Year: |
2019 |
| Subject Terms: |
Science & Technology; Physical Sciences; Astronomy & Astrophysics; Physics; Particles & Fields; dark matter detectors; dark matter experiments; dwarfs galaxies; gamma ray detectors; MILKY-WAY; HALO; CONSTRAINTS; PROFILES; DECAY; info |
| Description: |
The file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above. ; Dwarf spheroidal galaxies are among the most promising targets for detecting signals of Dark Matter (DM) annihilations. The H.E.S.S. experiment has observed five of these systems for a total of about 130 hours. The data are re-analyzed here, and, in the absence of any detected signals, are interpreted in terms of limits on the DM annihilation cross section. Two scenarios are considered: i) DM annihilation into mono-energetic gamma-rays and ii) DM in the form of pure WIMP multiplets that, annihilating into all electroweak bosons, produce a distinctive gamma-ray spectral shape with a high-energy peak at the DM mass and a lower-energy continuum. For case i), upper limits at 95% confidence level of about lang σ v rang lesssim 3 × 10−25 cm3 s−1 are obtained in the mass range of 400 GeV to 1 TeV. For case ii), the full spectral shape of the models is used and several excluded regions are identified, but the thermal masses of the candidates are not robustly ruled out. ; The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the German Research Foundation (DFG), the Helmholtz Association, the Alexander von Humboldt Foundation, the French Ministry of Higher Education, Research and Innovation, the Centre National de la Recherche Scientifique (CNRS/IN2P3 and CNRS/INSU), the Commissariat `a l’´energie atomique et aux ´energies alternatives (CEA), the U.K. Science and Technology Facilities Council (STFC), the Knut and Alice Wallenberg Foundation, the National Science Centre, Poland grant no. 2016/22/M/ST9/00382, the South African Department of Science and Technology and National Research Foundation, the ... |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://iopscience.iop.org/article/10.1088/1475-7516/2018/11/037/meta |
| DOI: |
10.1088/1475-7516/2018/11/037/meta |
| Availability: |
https://iopscience.iop.org/article/10.1088/1475-7516/2018/11/037/meta |
| Rights: |
undefined |
| Accession Number: |
edsbas.3F748521 |
| Database: |
BASE |