Searches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with HESS

被引:38
作者
Abdalla, H. [1 ]
Aharonian, F. [3 ,4 ,5 ]
Benkhali, F. Ait [3 ]
Anguner, E. O. [19 ]
Arakawa, M. [38 ]
Arcaro, C. [1 ]
Armand, C. [22 ]
Arrieta, M. [14 ]
Backes, M. [1 ,8 ]
Barnard, M. [1 ]
Becherini, Y. [10 ]
Tjus, J. Becker [11 ]
Berge, D. [34 ]
Bernhard, S. [12 ]
Bernloehr, K. [3 ]
Blackwell, R. [13 ]
Bottcher, M. [1 ]
Boisson, C. [14 ]
Bolmont, J. [15 ]
Bonnefoy, S. [34 ]
Bordas, P. [3 ]
Bregeon, J. [16 ]
Brun, F. [24 ]
Brun, P. [17 ]
Bryan, M. [9 ]
Buechele, M. [33 ]
Bulik, T. [18 ]
Bylund, T. [10 ]
Capasso, M. [26 ]
Caroff, S. [27 ]
Carosi, A. [22 ]
Casanova, S. [3 ,20 ]
Cerruti, M. [15 ]
Chakraborty, N. [3 ]
Chandra, S. [1 ]
Chaves, R. C. G. [16 ]
Chen, A. [21 ]
Colafrancesco, S. [21 ]
Condon, B. [24 ]
Davids, I. D. [8 ]
Deil, C. [3 ]
Devin, J. [16 ]
deWilt, P. [13 ]
Dirson, L. [2 ]
Djannati-Atai, A. [28 ]
Dmytriiev, A. [14 ]
Donath, A. [3 ]
Doroshenko, V. [26 ]
Drury, L. O'C. [4 ]
Dyks, J. [31 ]
机构
[1] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa
[2] Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany
[3] Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany
[4] Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland
[5] Natl Acad Sci Republ Armenia, Marshall Baghramian Ave 24, Yerevan, Armenia
[6] Yerevan Phys Inst, 2 Alikhanian Bros St, Yerevan 375036, Armenia
[7] Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany
[8] Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia
[9] Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[10] Linnaeus Univ, Dept Phys & Elect Engn, S-35195 Vaxjo, Sweden
[11] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl IV Weltraum & Astrophys, D-44780 Bochum, Germany
[12] Leopold Franzens Univ Innsbruck, Inst Astro Teilchenphys, A-6020 Innsbruck, Austria
[13] Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia
[14] Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France
[15] Univ Paris Diderot, Sorbonne Univ, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, 4 Pl Jussieu, F-75252 Paris, France
[16] Univ Montpellier, Lab Universe & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier, France
[17] Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France
[18] Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland
[19] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France
[20] Inst Fizyki Jadrowej, Ul Radzikowskiego 152, PL-31342 Krakow, Poland
[21] Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa
[22] Univ Savoie Mt Blanc, Univ Grenoble Alpes, Lab Annecy Phys Particules, F-74000 Annecy, France
[23] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany
[24] Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France
[25] Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, SE-10691 Stockholm, Sweden
[26] Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany
[27] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[28] Univ Paris Diderot, Sorbonne Paris Cite, APC AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France
[29] Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
[30] Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England
[31] Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland
[32] Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany
[33] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-14476 Erlangen, Germany
[34] DESY, D-15738 Zeuthen, Germany
[35] Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland
[36] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Ctr Astron, Grudziadzka 5, PL-87100 Torun, Poland
[37] Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa
[38] Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan
[39] Univ Tokyo, UTIAS, Kavli Inst Phys & Math Univ Kavli IPMU, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778583, Japan
[40] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
[41] RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
[42] Univ Sao Paulo, Inst Sao Carlos, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil
[43] CERN, Theoret Phys Dept, Geneva, Switzerland
[44] CNRS, LPTHE, 4 Pl Jussieu, F-75252 Paris, France
[45] Sorbonne Univ, LPTHE, 4 Pl Jussieu, F-75252 Paris, France
[46] DESY, Notkestr 85, D-22607 Hamburg, Germany
[47] CNRS, IAP, UMR 7095, 98 Bis Blvd Arago, F-75014 Paris, France
[48] Sorbonne Univ, 98 Bis Blvd Arago, F-75014 Paris, France
[49] Univ Oxford, Dept Phys, BIPAC, Denys Wilkinson Bldg,1 Keble Rd, Oxford OX1 3RH, England
[50] JHU, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA
基金
欧洲研究理事会; 澳大利亚研究理事会; 巴西圣保罗研究基金会; 奥地利科学基金会; 新加坡国家研究基金会; 英国科学技术设施理事会;
关键词
dark matter detectors; dark matter experiments; dwarfs galaxies; gamma ray detectors; MILKY-WAY; HALO; CONSTRAINTS; PROFILES; DECAY;
D O I
10.1088/1475-7516/2018/11/037
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 <sigma upsilon > less than or similar to 3 x 10(-25) cm(3) s(-1) are obtained in the mass range of 400 GeV to 1TeV. 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.
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页数:22
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