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- Abramowski, A. (author)
Search for dark matter annihilation signals from the Fornax galaxy cluster with H.E.S.S.
- Article/chapterEnglish2012
Publisher, publication year, extent ...
- 2012
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:lnu-30221
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-30221URI
- https://doi.org/10.1088/0004-637X/750/2/123DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95487URI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Correction published in: Astrophysical Journal 2014, vol 783, issue 1, ArticleID 63, doi:10.1088/0004-637X/783/1/63
- Correction in: Astrophysical Journal, 2014, vol. 783, issue. 1. DOI: 10.1088/0004-637X/783/1/63, WOS: 000334919600063QC 20120528
- The Fornax galaxy cluster was observed with the High Energy Stereoscopic System for a total live time of 14.5 hr, searching for very high energy (VHE; E > 100GeV) gamma-rays from dark matter (DM) annihilation. No significant signal was found in searches for point-like and extended emissions. Using several models of the DM density distribution, upper limits on the DM velocity-weighted annihilation cross-section as a function of the DM particle mass are derived. Constraints are derived for different DM particle models, such as those arising from Kaluza-Klein and supersymmetric models. Various annihilation final states are considered. Possible enhancements of the DM annihilation gamma-ray flux, due to DM substructures of the DM host halo, or from the Sommerfeld effect, are studied. Additional gamma-ray contributions from internal bremsstrahlung and inverse Compton radiation are also discussed. For a DM particle mass of 1 TeV, the exclusion limits at 95% of confidence level reach values of (95% C.L.) similar to 10(-23) cm(3) s(-1), depending on the DM particle model and halo properties. Additional contribution from DM substructures can improve the upper limits on by more than two orders of magnitude. At masses around 4.5 TeV, the enhancement by substructures and the Sommerfeld resonance effect results in a velocity-weighted annihilation cross-section upper limit at the level of (95% C.L.) similar to 10(-26) cm(3) s(-1).
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- astroparticle physics
- dark matter
- galaxies: clusters: general
- galaxies: clusters: individual (Fornax)
- gamma rays: galaxies: clusters
- gamma rays: general
- Astroparticle Physics
- Astropartikelfysik
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- Acero, F. (author)
- Aharonian, F. (author)
- Akhperjanian, A. G. (author)
- Anton, G. (author)
- Balzer, A. (author)
- Barnacka, A. (author)
- de Almeida, U. Barres (author)
- Becherini, Yvonne (author)
- Becker, J. (author)
- Behera, B. (author)
- Bernloehr, K. (author)
- Birsin, E. (author)
- Biteau, J. (author)
- Bochow, A. (author)
- Boisson, C. (author)
- Bolmont, J. (author)
- Bordas, P. (author)
- Brucker, J. (author)
- Brun, F. (author)
- Brun, P. (author)
- Bulik, T. (author)
- Bueching, 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)
- Clapson, A. C. (author)
- Coignet, G. (author)
- Cologna, G. (author)
- Conrad, JanKTH,Fysik(Swepub:kth)u1o0ezny (author)
- Dalton, M. (author)
- Daniel, M. K. (author)
- Davids, I. D. (author)
- Degrange, B. (author)
- Deil, C. (author)
- Dickinson, Hugh J.KTH,Fysik(Swepub:kth)PI000000 (author)
- Djannati-Atai, A. (author)
- Domainko, W. (author)
- Drury, L. O 'C. (author)
- Dubus, G. (author)
- Dutson, K. (author)
- Dyks, J. (author)
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- Egberts, K. (author)
- Eger, P. (author)
- Espigat, P. (author)
- Fallon, L. (author)
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- Fegan, S. (author)
- Feinstein, F. (author)
- Fernandes, M. V. (author)
- Fiasson, A. (author)
- Fontaine, G. (author)
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- Gallant, Y. A. (author)
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- Gerard, L. (author)
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- Glueck, B. (author)
- Goret, P. (author)
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- Haeffner, S. (author)
- Hague, J. D. (author)
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- Hauser, M. (author)
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- Heinzelmann, G. (author)
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- Hermann, G. (author)
- Hinton, J. A. (author)
- Hoffmann, A. (author)
- Hofmann, W. (author)
- Hofverberg, P. (author)
- Holler, M. (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)
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- Katz, U. (author)
- Kaufmann, S. (author)
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- Khangulyan, D. (author)
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- Klochkov, D. (author)
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- Kneiske, T. (author)
- Komin, Nu (author)
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- Kossakowski, R. (author)
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- Lamanna, G. (author)
- Lennarz, D. (author)
- Lohse, T. (author)
- Lopatin, A. (author)
- Lu, C. -C (author)
- Marandon, V. (author)
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- Maurin, D. (author)
- Maxted, N. (author)
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- Medina, M. C. (author)
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- Naumann, C. L. (author)
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- de Naurois, M. (author)
- Nedbal, D. (author)
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- Wilhelmi, E. de Ona (author)
- Opitz, B. (author)
- Ostrowski, M. (author)
- Oya, I. (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, JoachimKTH,Fysik(Swepub:kth)PI000000 (author)
- Rob, L. (author)
- Rosier-Lees, S. (author)
- Rowell, G. (author)
- Rudak, B. (author)
- Rulten, C. B. (author)
- Ruppel, J. (author)
- Sahakian, V. (author)
- Sanchez, D. A. (author)
- Santangelo, A. (author)
- Schlickeiser, R. (author)
- Schoeck, F. M. (author)
- Schulz, A. (author)
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- Schwarzburg, S. (author)
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- Sheidaei, F. (author)
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- 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, FranceFysik (creator_code:org_t)
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