H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center
Affiliations
- 1 Centre for Space Research, North-West University, Potchefstroom 2520, South Africa.
- 2 Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, D 22761 Hamburg, Germany.
- 3 Max-Planck-Institut für Kernphysik, P.O. Box 103980, D 69029 Heidelberg, Germany.
- 4 Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland.
- 5 National Academy of Sciences of the Republic of Armenia, Marshall Baghramian Avenue, 24, 0019 Yerevan, Republic of Armenia.
- 6 Yerevan Physics Institute, 2 Alikhanian Brothers Street, 375036 Yerevan, Armenia.
- 7 Department of Physics and Electrical Engineering, Linnaeus University, 351 95 Växjö, Sweden.
- 8 Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, D 12489 Berlin, Germany.
- 9 LUTH, Observatoire de Paris, PSL Research University, CNRS, Université Paris Diderot, 5 Place Jules Janssen, 92190 Meudon, France.
- 10 Laboratoire d'Annecy-le-Vieux de Physique des Particules, Université Savoie Mont-Blanc, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France.
- 11 University of Namibia, Department of Physics, Private Bag 13301, Windhoek, Namibia.
- 12 GRAPPA, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- 13 Institut für Theoretische Physik, Lehrstuhl IV: Weltraum und Astrophysik, Ruhr-Universität Bochum, D 44780 Bochum, Germany.
- 14 GRAPPA, Anton Pannekoek Institute for Astronomy and Institute of High-Energy Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- 15 Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, A-6020 Innsbruck, Austria.
- 16 School of Chemistry & Physics, University of Adelaide, Adelaide 5005, Australia.
- 17 Sorbonne Universités, UPMC Université Paris 06, Université Paris Diderot, Sorbonne Paris Cité, CNRS, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), 4 place Jussieu, F-75252, Paris Cedex 5, France.
- 18 Institut für Astronomie und Astrophysik, Universität Tübingen, Sand 1, D 72076 Tübingen, Germany.
- 19 Laboratoire Univers et Particules de Montpellier, Université Montpellier 2, CNRS/IN2P3, CC 72, Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France.
- 20 DSM/Irfu, CEA Saclay, F-91191 Gif-Sur-Yvette Cedex, France.
- 21 Astronomical Observatory, The University of Warsaw, Aleje Ujazdowskie 4, 00-478 Warsaw, Poland.
- 22 Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France.
- 23 Instytut Fizyki Jądrowej PAN, ulica Radzikowskiego 152, 31-342 Kraków, Poland.
- 24 School of Physics, University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050 South Africa.
- 25 Landessternwarte, Universität Heidelberg, Königstuhl, D 69117 Heidelberg, Germany.
- 26 Université Bordeaux, CNRS/IN2P3, Centre d'Études Nucléaires de Bordeaux Gradignan, 33175 Gradignan, France.
- 27 Oskar Klein Centre, Department of Physics, Stockholm University, Albanova University Center, SE-10691 Stockholm, Sweden.
- 28 Wallenberg Academy Fellow.
- 29 Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France.
- 30 APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10, rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France.
- 31 Université Grenoble Alpes, IPAG, F-38000 Grenoble, France CNRS, IPAG, F-38000 Grenoble, France.
- 32 Department of Physics and Astronomy, The University of Leicester, University Road, Leicester LE1 7RH, United Kingdom.
- 33 Nicolaus Copernicus Astronomical Center, ulica Bartycka 18, 00-716 Warsaw, Poland.
- 34 Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24/25, D 14476 Potsdam, Germany.
- 35 Universität Erlangen-Nürnberg, Physikalisches Institut, Erwin-Rommel-Straße 1, D 91058 Erlangen, Germany.
- 36 Laboratoire d'Annecy-le-Vieux de Physique des Particules, Université de Savoie, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France.
- 37 DESY, D-15738 Zeuthen, Germany.
- 38 Obserwatorium Astronomiczne, Uniwersytet Jagielloński, ulica Orla 171, 30-244 Kraków, Poland.
- 39 Centre for Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland.
- 40 Université Bordeaux 1, CNRS/IN2P3, Centre d'Études Nucléaires de Bordeaux Gradignan, 33175 Gradignan, France.
- 41 Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
- 42 Laboratoire Univers et Particules de Montpellier, Université Montpellier, CNRS/IN2P3, CC 72, Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France.
- 43 GRAPPA, Institute of High-Energy Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- PMID: 27768338
- DOI: 10.1103/PhysRevLett.117.151302
H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center
Authors
Affiliations
- 1 Centre for Space Research, North-West University, Potchefstroom 2520, South Africa.
- 2 Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, D 22761 Hamburg, Germany.
- 3 Max-Planck-Institut für Kernphysik, P.O. Box 103980, D 69029 Heidelberg, Germany.
- 4 Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland.
- 5 National Academy of Sciences of the Republic of Armenia, Marshall Baghramian Avenue, 24, 0019 Yerevan, Republic of Armenia.
- 6 Yerevan Physics Institute, 2 Alikhanian Brothers Street, 375036 Yerevan, Armenia.
- 7 Department of Physics and Electrical Engineering, Linnaeus University, 351 95 Växjö, Sweden.
- 8 Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, D 12489 Berlin, Germany.
- 9 LUTH, Observatoire de Paris, PSL Research University, CNRS, Université Paris Diderot, 5 Place Jules Janssen, 92190 Meudon, France.
- 10 Laboratoire d'Annecy-le-Vieux de Physique des Particules, Université Savoie Mont-Blanc, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France.
- 11 University of Namibia, Department of Physics, Private Bag 13301, Windhoek, Namibia.
- 12 GRAPPA, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- 13 Institut für Theoretische Physik, Lehrstuhl IV: Weltraum und Astrophysik, Ruhr-Universität Bochum, D 44780 Bochum, Germany.
- 14 GRAPPA, Anton Pannekoek Institute for Astronomy and Institute of High-Energy Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- 15 Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, A-6020 Innsbruck, Austria.
- 16 School of Chemistry & Physics, University of Adelaide, Adelaide 5005, Australia.
- 17 Sorbonne Universités, UPMC Université Paris 06, Université Paris Diderot, Sorbonne Paris Cité, CNRS, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), 4 place Jussieu, F-75252, Paris Cedex 5, France.
- 18 Institut für Astronomie und Astrophysik, Universität Tübingen, Sand 1, D 72076 Tübingen, Germany.
- 19 Laboratoire Univers et Particules de Montpellier, Université Montpellier 2, CNRS/IN2P3, CC 72, Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France.
- 20 DSM/Irfu, CEA Saclay, F-91191 Gif-Sur-Yvette Cedex, France.
- 21 Astronomical Observatory, The University of Warsaw, Aleje Ujazdowskie 4, 00-478 Warsaw, Poland.
- 22 Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France.
- 23 Instytut Fizyki Jądrowej PAN, ulica Radzikowskiego 152, 31-342 Kraków, Poland.
- 24 School of Physics, University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg, 2050 South Africa.
- 25 Landessternwarte, Universität Heidelberg, Königstuhl, D 69117 Heidelberg, Germany.
- 26 Université Bordeaux, CNRS/IN2P3, Centre d'Études Nucléaires de Bordeaux Gradignan, 33175 Gradignan, France.
- 27 Oskar Klein Centre, Department of Physics, Stockholm University, Albanova University Center, SE-10691 Stockholm, Sweden.
- 28 Wallenberg Academy Fellow.
- 29 Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France.
- 30 APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10, rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France.
- 31 Université Grenoble Alpes, IPAG, F-38000 Grenoble, France CNRS, IPAG, F-38000 Grenoble, France.
- 32 Department of Physics and Astronomy, The University of Leicester, University Road, Leicester LE1 7RH, United Kingdom.
- 33 Nicolaus Copernicus Astronomical Center, ulica Bartycka 18, 00-716 Warsaw, Poland.
- 34 Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24/25, D 14476 Potsdam, Germany.
- 35 Universität Erlangen-Nürnberg, Physikalisches Institut, Erwin-Rommel-Straße 1, D 91058 Erlangen, Germany.
- 36 Laboratoire d'Annecy-le-Vieux de Physique des Particules, Université de Savoie, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France.
- 37 DESY, D-15738 Zeuthen, Germany.
- 38 Obserwatorium Astronomiczne, Uniwersytet Jagielloński, ulica Orla 171, 30-244 Kraków, Poland.
- 39 Centre for Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland.
- 40 Université Bordeaux 1, CNRS/IN2P3, Centre d'Études Nucléaires de Bordeaux Gradignan, 33175 Gradignan, France.
- 41 Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
- 42 Laboratoire Univers et Particules de Montpellier, Université Montpellier, CNRS/IN2P3, CC 72, Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France.
- 43 GRAPPA, Institute of High-Energy Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
- PMID: 27768338
- DOI: 10.1103/PhysRevLett.117.151302
Abstract
A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S.
Results: No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.
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