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- Abramowski, A. (author)
HESS constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies
- Article/chapterEnglish2011
Publisher, publication year, extent ...
- Elsevier BV,2011
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:lnu-30246
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-30246URI
- https://doi.org/10.1016/j.astropartphys.2010.12.006DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-69464URI
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32690URI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- authorCount :194
- QC 20110418
- The Sculptor and Carina dwarf spheroidal galaxies were observed with the H.E.S.S. Cherenkov telescope array between January 2008 and December 2009. The data sets consist of a total of 11.8 h and 14.811 of high quality data, respectively. No gamma-ray signal was detected at the nominal positions of these galaxies above 220 GeV and 320 GeV, respectively. Upper limits on the gamma-ray fluxes at 95% CL assuming two forms for the spectral energy distribution (a power law shape and one derived from dark matter annihilation) are obtained at the level of 10(-13)-10(-12) cm(-2) s(-1) in the TeV range. Constraints on the velocity weighted dark matter particle annihilation cross section for both Sculptor and Carina dwarf galaxies range from 10(-21) cm(3) s(-1) down to similar to 10(-2)2 cm(3) s(-1) on the dark matter halo model used. Possible enhancements of the gamma-ray flux are studied: the Sommerfeld effect, which is found to exclude some dark matter particle masses, the internal Bremsstrahlung and clumps in the dark-matter halo distributions. (C) 2010 Elsevier B.V. All rights reserved.
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
- Gamma-rays: observations - Dwarf spheroidal galaxy
- Dark matter
- Sculptor
- Carina
- Sommerfeld enhancement
- Internal Bremsstrahlung
- Astropartikelfysik
- Astroparticle Physics
- Astronomy and astrophysics
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- Acero, F. (author)
- Aharonian, F. (author)
- Akhperjanian, A. G. (author)
- Anton, G. (author)
- Barnacka, A. (author)
- de Almeida, U. Barres (author)
- Bazer-Bachi, A. R. (author)
- Becherini, Yvonne (author)
- Becker, J. (author)
- Behera, B. (author)
- Bernloehr, K. (author)
- Bochow, A. (author)
- Boisson, C. (author)
- Bolmontr, J. (author)
- Bordas, P. (author)
- Borrel, V. (author)
- Brucker, J. (author)
- Brun, F. (author)
- Brun, P. (author)
- Bulik, T. (author)
- Buesching, I. (author)
- Carrigan, S. (author)
- Casanova, S. (author)
- Cerruti, M. (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)
- Charbonnier, A. (author)
- Chaves, R. C. G. (author)
- Cheesebrough, A. (author)
- Chounet, L. -M (author)
- Clapson, A. C. (author)
- Coignet, G. (author)
- Conrad, JanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)conrad (author)
- Dalton, M. (author)
- Daniel, M. K. (author)
- Davids, I. D. (author)
- Degrange, B. (author)
- Deil, C. (author)
- Dickinson, Hugh J.Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)hdick (author)
- Djannati-Atai, A. (author)
- Domainko, W. (author)
- Drury, L. O. C. (author)
- Dubois, F. (author)
- Dubus, G. (author)
- Dyks, J. (author)
- Dyrda, M. (author)
- Egberts, K. (author)
- Eger, P. (author)
- Espigat, P. (author)
- Fallon, L. (author)
- Farnier, C. (author)
- Fegan, S. (author)
- Feinstein, F. (author)
- Fernandes, M. V. (author)
- Fiasson, A. (author)
- Fontaine, G. (author)
- Foerster, A. (author)
- Fuessling, M. (author)
- Gallant, Y. A. (author)
- Gast, H. (author)
- Gerard, L. (author)
- Gerbig, D. (author)
- Giebels, B. (author)
- Glicenstein, J. F. (author)
- Glueck, B. (author)
- Goret, P. (author)
- Goering, D. (author)
- Hague, J. D. (author)
- Hampf, D. (author)
- Hauser, M. (author)
- Heinz, S. (author)
- Heinzelmann, G. (author)
- Henri, G. (author)
- Hermann, G. (author)
- Hinton, J. A. (author)
- Hoffmann, A. (author)
- Hofmann, W. (author)
- Hofverberg, P. (author)
- Horns, D. (author)
- Jacholkowska, A. (author)
- de Jager, O. C. (author)
- Jahn, C. (author)
- Jamrozy, M. (author)
- Jung, I. (author)
- Kastendieck, M. A. (author)
- Katarzynski, K. (author)
- Katz, U. (author)
- Kaufmann, S. (author)
- Keogh, D. (author)
- Kerschhaggl, M. (author)
- Khangulyan, D. (author)
- Khelifi, B. (author)
- Klochkov, D. (author)
- Kluzniak, W. (author)
- Kneiske, T. (author)
- Komin, Nu (author)
- Kosack, K. (author)
- Kossakowski, R. (author)
- Laffon, H. (author)
- Lamanna, G. (author)
- Lennarz, D. (author)
- Lohse, T. (author)
- Lopatin, A. (author)
- Lu, C. -C (author)
- Marandon, V. (author)
- Marcowith, A. (author)
- Masbou, J. (author)
- Maurin, D. (author)
- Maxted, N. (author)
- McComb, T. J. L. (author)
- Medina, M. C. (author)
- Mehault, J. (author)
- Moderski, R. (author)
- Moulin, E. (author)
- Naumann, C. L. (author)
- Naumann-Godo, M. (author)
- de Naurois, M. (author)
- Nedbal, D. (author)
- Nekrassov, D. (author)
- Nguyen, N. (author)
- Nicholas, B. (author)
- Niemiec, J. (author)
- Nolan, S. J. (author)
- Ohm, S. (author)
- Olive, J. -F (author)
- Wilhelmi, E. de Ona (author)
- Opitz, B. (author)
- Ostrowski, M. (author)
- Panter, M. (author)
- Arribas, M. Paz (author)
- Pedaletti, G. (author)
- Pelletier, G. (author)
- Petrucci, P. -O (author)
- Pita, S. (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)
- Raue, M. (author)
- Rayner, S. M. (author)
- Reimer, A. (author)
- Reimer, O. (author)
- Renaud, M. (author)
- de los Reyes, R. (author)
- Rieger, F. (author)
- Ripken, JoachimStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ripken (author)
- Rob, L. (author)
- Rosier-Lees, S. (author)
- Rowell, G. (author)
- Rudak, B. (author)
- Rulten, C. B. (author)
- Ruppel, J. (author)
- Ryde, FelixKTH,Partikel- och astropartikelfysik(Swepub:kth)u1tlyg6w (author)
- Sahakian, V. (author)
- Santangelo, A. (author)
- Schlickeiser, R. (author)
- Schoeck, F. M. (author)
- Schoenwald, A. (author)
- Schwanke, U. (author)
- Schwarzburg, S. (author)
- Schwemmer, S. (author)
- Shalchi, A. (author)
- Sikora, M. (author)
- Skilton, J. L. (author)
- Sol, H. (author)
- Spengler, G. (author)
- Stawarz, L. (author)
- Steenkamp, R. (author)
- Stegmann, C. (author)
- Stinzing, F. (author)
- Sushch, I. (author)
- Szostek, A. (author)
- Tavernet, J. -P (author)
- Terrier, R. (author)
- Tibolla, O. (author)
- Tluczykont, M. (author)
- Valerius, K. (author)
- van Eldik, C. (author)
- Vasileiadis, G. (author)
- Venter, C. (author)
- Vialle, J. P. (author)
- Viana, A. (author)
- Vincent, P. (author)
- Vivier, M. (author)
- Voelk, H. J. (author)
- Volpe, F. (author)
- Vorobiov, S. (author)
- Vorster, M. (author)
- Wagner, S. J. (author)
- Ward, M. (author)
- Wierzcholska, A. (author)
- Zajczyk, A. (author)
- Zdziarski, A. A. (author)
- Zech, A. (author)
- Zechlin, H. -S (author)
- Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, FranceFysikum (creator_code:org_t)
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- In:Astroparticle physics: Elsevier BV34:8, s. 608-6160927-65051873-2852
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- Arribas, M. Paz
- Pedaletti, G.
- Pelletier, G.
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- Puehlhofer, G.
- Quirrenbach, A.
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- Reimer, A.
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- Sol, H.
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