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- Abramowski, A.Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany,Natl Acad Sci Republ Armenia, Yerevan 0019, Armenia,Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, NL-1098 XH Amsterdam, Netherlands,Uniwersytet Jagiellonski, Astron Observ, PL-30244 Krakow, Poland (author)
Search for dark matter annihilation signatures in HESS observations of dwarf spheroidal galaxies
- Article/chapterEnglish2014
Publisher, publication year, extent ...
- 2014
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:lnu-39563
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-39563URI
- https://doi.org/10.1103/PhysRevD.90.112012DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-113535URI
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- Language:English
- Summary in:English
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- AuthorCount:229;
- Dwarf spheroidal galaxies of the Local Group are close satellites of the Milky Way characterized by a large mass-to-light ratio and are not expected to be the site of nonthermal high-energy gamma-ray emission or intense star formation. Therefore they are among the most promising candidates for indirect dark matter searches. During the last years the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes observed five of these dwarf galaxies for more than 140 hours in total, searching for TeV gamma-ray emission from annihilation of dark matter particles. The new results of the deep exposure of the Sagittarius dwarf spheroidal galaxy, the first observations of the Coma Berenices and Fornax dwarves and the reanalysis of two more dwarf spheroidal galaxies already published by the H.E.S.S. Collaboration, Carina and Sculptor, are presented. In the absence of a significant signal new constraints on the annihilation cross section applicable to weakly interacting massive particles (WIMPs) are derived by combining the observations of the five dwarf galaxies. The combined exclusion limit depends on the WIMP mass and the best constraint is reached at 1-2 TeV masses with a cross-section upper bound of similar to 3.9 x 10(-24) cm(3) s(-1) at a 95% confidence level.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- Astropartikelfysik
- Astroparticle Physics
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- Aharonian, F.Max Planck Inst Kernphys, D-69029 Heidelberg, Germany (author)
- Benkhali, F. AitMax Planck Inst Kernphys, D-69029 Heidelberg, Germany (author)
- Akhperjanian, A. G.Natl Acad Sci Republ Armenia, Yerevan 0019, Armenia (author)
- Anguener, E.Humboldt Univ, Inst Phys, D-12489 Berlin, Germany (author)
- Backes, M.Univ Namibia, Dept Phys, Windhoek, Namibia (author)
- Balenderan, S.Univ Durham, Dept Phys, Durham DH1 3LE, England (author)
- Balzer, A.Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, NL-1098 XH Amsterdam, Netherlands (author)
- Barnacka, A.Uniwersytet Jagiellonski, Astron Observ, PL-30244 Krakow, Poland (author)
- Becherini, YvonneLinnéuniversitetet,Institutionen för fysik och elektroteknik (IFE)(Swepub:lnu)yvbeaa (author)
- Tjus, J. Becker (author)
- Berge, D. (author)
- Bernhard, S. (author)
- Bernloehr, K. (author)
- Birsin, E. (author)
- Biteau, J. (author)
- Boettcher, M. (author)
- Boisson, C. (author)
- Bolmont, J. (author)
- Bordas, P. (author)
- Bregeon, J. (author)
- Brun, F. (author)
- Brun, P. (author)
- Bryan, M. (author)
- Bulik, T. (author)
- Carrigan, S. (author)
- Casanova, S. (author)
- Meyer, ManuelStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)rwagner (author)
- Chakraborty, N. (author)
- Chalme-Calvet, R. (author)
- Chaves, R. C. G. (author)
- Chretien, M. (author)
- Colafrancesco, S. (author)
- Cologna, G. (author)
- Conrad, JanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)conrad (author)
- Couturier, C. (author)
- Cui, Y. (author)
- Dalton, M. (author)
- Davids, I. D. (author)
- Degrange, B. (author)
- Deil, C. (author)
- deWilt, P. (author)
- Djannati-Atai, A. (author)
- Domainko, W. (author)
- Donath, A. (author)
- Drury, L. O 'C. (author)
- Dubus, G. (author)
- Dutson, K. (author)
- Dyks, J. (author)
- Dyrda, M. (author)
- Edwards, T. (author)
- Egberts, K. (author)
- Eger, P. (author)
- Espigat, P. (author)
- Farnier, C. (author)
- Fegan, S. (author)
- Feinstein, F. (author)
- Fernandes, M. V. (author)
- Fernandez, D. (author)
- Fiasson, A. (author)
- Fontaine, G. (author)
- Foerster, A. (author)
- Fuessling, M. (author)
- Gabici, S. (author)
- Gajdus, M. (author)
- Gallant, Y. A. (author)
- Garrigoux, T. (author)
- Giavitto, G. (author)
- Giebels, B. (author)
- Glicenstein, J. F. (author)
- Gottschall, D. (author)
- Goudelis, A. (author)
- Grondin, M. -H (author)
- Grudzinska, M. (author)
- Hadsch, D. (author)
- Haeffner, S. (author)
- Hahn, J. (author)
- Harris, J. (author)
- Heinzelmann, G. (author)
- Henri, G. (author)
- Hermann, G. (author)
- Hervet, O. (author)
- Hillert, A. (author)
- Hinton, J. A. (author)
- Hofmann, W. (author)
- Hofverberg, P. (author)
- Holler, M. (author)
- Horns, D. (author)
- Ivascenko, A. (author)
- Jacholkowska, A. (author)
- Jahn, C. (author)
- Jamrozy, M. (author)
- Janiak, M. (author)
- Jankowsky, F. (author)
- Jung, I. (author)
- Kastendieck, M. A. (author)
- Katarzynski, K. (author)
- Katz, U. (author)
- Kaufmann, S. (author)
- Khelifi, B. (author)
- Kieffer, M. (author)
- Klepser, S. (author)
- Klochkov, D. (author)
- Kluzniak, W. (author)
- Kolitzus, D. (author)
- Komin, Nu. (author)
- Kosack, K. (author)
- Krakau, S. (author)
- Krayzel, F. (author)
- Krueger, P. P. (author)
- Laffon, H. (author)
- Lamanna, G. (author)
- Lefaucheur, J. (author)
- Lefranc, V. (author)
- Lemiere, A. (author)
- Lemoine-Goumard, M. (author)
- Lenain, J. -P (author)
- Lohse, T. (author)
- Lopatin, A. (author)
- Lu, C. -C (author)
- Marandon, V. (author)
- Marcowith, A. (author)
- Marx, R. (author)
- Maurin, G. (author)
- Maxted, N. (author)
- Mayer, M. (author)
- McComb, T. J. L. (author)
- Mehault, J. (author)
- Meintjes, P. J. (author)
- Menzler, U. (author)
- Meyer, M. (author)
- Mitchell, A. M. W. (author)
- Moderski, R. (author)
- Mohamed, M. (author)
- Morå, KnutStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)kdund (author)
- Moulin, E. (author)
- Murach, T. (author)
- de Naurois, M. (author)
- Niemiec, J. (author)
- Nolan, S. J. (author)
- Oakes, L. (author)
- Odaka, H. (author)
- Ohm, S. (author)
- Opitz, B. (author)
- Ostrowski, M. (author)
- Oya, I. (author)
- Panter, M. (author)
- Parsons, R. D. (author)
- Arribas, M. Paz (author)
- Pekeur, N. W. (author)
- Pelletier, G. (author)
- Perez, J. (author)
- Petrucci, P. -O (author)
- Peyaud, B. (author)
- Pita, S. (author)
- Poon, H. (author)
- Puehlhofer, G. (author)
- Punch, MichaelUniv Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France(Swepub:lnu)mipuaa (author)
- Quirrenbach, A. (author)
- Raab, S. (author)
- Reichardt, I. (author)
- Reimer, A. (author)
- Reimer, O. (author)
- Renaud, M. (author)
- de los Reyes, R. (author)
- Rieger, F. (author)
- Rob, L. (author)
- Romoli, C. (author)
- Rosier-Lees, S. (author)
- Rowell, G. (author)
- Rudak, B. (author)
- Rulten, C. B. (author)
- Sahakian, V. (author)
- Salek, D. (author)
- Sanchez, D. A. (author)
- Santangelo, A. (author)
- Schlickeiser, R. (author)
- Schuessler, F. (author)
- Schulz, A. (author)
- Schwanke, U. (author)
- Schwarzburg, S. (author)
- Schwemmer, S. (author)
- Serpico, P. (author)
- Sol, H. (author)
- Spanier, F. (author)
- Spengler, GerritStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)gspen (author)
- Spiess, F. (author)
- Steenkamp, R. (author)
- Stegmann, C. (author)
- Stinzing, F. (author)
- Stycz, K. (author)
- Sushch, I. (author)
- Tavernet, J. -P (author)
- Tavernier, T. (author)
- Taylor, A. M. (author)
- Terrier, R. (author)
- Tluczykont, M. (author)
- Trichard, C. (author)
- Valerius, K. (author)
- van Eldik, C. (author)
- van Soelen, B. (author)
- Vasileiadis, G. (author)
- Veh, J. (author)
- Venter, C. (author)
- Viana, A. (author)
- Vincent, P. (author)
- Vink, J. (author)
- Voelk, H. J. (author)
- Volpe, F. (author)
- Vorster, M. (author)
- Vuillaume, T. (author)
- Wagner, S. J. (author)
- Wagner, P. (author)
- Wagner, R. M. (author)
- Ward, M. (author)
- Weidinger, M. (author)
- Weitzel, Q. (author)
- White, R. (author)
- Wierzcholska, A. (author)
- Willmann, P. (author)
- Woernlein, A. (author)
- Wouters, D. (author)
- Yang, R. (author)
- Zabalza, V. (author)
- Zaborov, D. (author)
- Zacharias, M. (author)
- Zdziarski, A. A. (author)
- Zech, A. (author)
- Zechlin, H. -S (author)
- Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, GermanyNatl Acad Sci Republ Armenia, Yerevan 0019, Armenia (creator_code:org_t)
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