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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Search for Dark Matter Annihilation Signals from Unidentified Fermi-LAT Objects with H.E.S.S.
Astrophysical Journal, Volume 918, No. 1, Article 17, Year 2021
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Description
Cosmological N-body simulations show that Milky Way-sized galaxies harbor a population of unmerged dark matter (DM) subhalos. These subhalos could shine in gamma-rays and eventually be detected in gamma-ray surveys as unidentified sources. We performed a thorough selection among unidentified Fermi-Large Area Telescope Objects (UFOs) to identify them as possible tera-electron-volt-scale DM subhalo candidates. We search for very-high-energy (E ⪆ 100 GeV) gamma-ray emissions using H.E.S.S. observations toward four selected UFOs. Since no significant very-high-energy gamma-ray emission is detected in any data set of the four observed UFOs or in the combined UFO data set, strong constraints are derived on the product of the velocity-weighted annihilation cross section σ v by the J factor for the DM models. The 95% confidence level observed upper limits derived from combined H.E.S.S. observations reach σ vJ values of 3.7 ? 10-5 and 8.1 ? 10-6 GeV2 cm-2 s-1 in the W + W - and τ + τ - channels, respectively, for a 1 TeV DM mass. Focusing on thermal weakly interacting massive particles, the H.E.S.S. constraints restrict the J factors to lie in the range 6.1 ? 1019-2.0 ? 1021 GeV2 cm-5 and the masses to lie between 0.2 and 6 TeV in the W + W - channel. For the τ + τ - channel, the J factors lie in the range 7.0 ? 1019-7.1 ? 1020 GeV2 cm-5 and the masses lie between 0.2 and 0.5 TeV. Assuming model-dependent predictions from cosmological N-body simulations on the J-factor distribution for Milky Way-sized galaxies, the DM models with masses >0.3 TeV for the UFO emissions can be ruled out at high confidence level. © 2021. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Abdalla, Hassan
Namibia, Windhoek
University of Namibia
Aharonian, F. A.
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Armenia, Yerevan
Russian-armenian University
Ait Benkhali, F.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Angüner, Ekrem Oǧuzhan
France, Marseille
Aix Marseille Université
Arcaro, Cornelia H.E.
South Africa, Potchefstroom
North-west University
Armand, Céline
France, Chambery
Université Savoie Mont Blanc
Armstrong, Thomas P.
United Kingdom, Oxford
University of Oxford
Ashkar, Halim
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Backes, Michael
Namibia, Windhoek
University of Namibia
South Africa, Potchefstroom
North-west University
Baghmanyan, Vardan
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Barbosa-Martins, V.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Barnacka, Anna
Poland, Krakow
Uniwersytet Jagielloński
Barnard, Monica A.
South Africa, Potchefstroom
North-west University
Becherini, Yvonne
Sweden, Vaxjo
Linnaeus University, Växjö
Berge, David
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Bernlöhr, Konrad
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Bi, Baiyang
Germany, Tubingen
Eberhard Karls Universität Tübingen
Boettcher, M.
South Africa, Potchefstroom
North-west University
Boisson, Catherine
France, Paris
Université Psl
Bolmont, Julien
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
de Bony de Lavergne, Mathieu
France, Chambery
Université Savoie Mont Blanc
Breuhaus, Mischa
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Brose, Robert
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Brun, François
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Bulk, Tomasz
Poland, Warsaw
University of Warsaw
Bylund, Tomas
Sweden, Vaxjo
Linnaeus University, Växjö
Cangemi, Floriane
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Caroff, Sami
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Casanova, Sabrina
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Chambery, Pauline
Poland, Krakow
Uniwersytet Jagielloński
Catalano, Jacqueline
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Chand, Tej
South Africa, Potchefstroom
North-west University
Chen, Andrew W.
South Africa, Johannesburg
University of the Witwatersrand
Cotter, Garret
United Kingdom, Oxford
University of Oxford
Curyło, Małgorzata
Poland, Warsaw
University of Warsaw
Dalgleish, Hannah S.
Namibia, Windhoek
University of Namibia
South Africa, Potchefstroom
North-west University
Damascène Mbarubucyeye, Jean
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Davids, Isak Delberth
Namibia, Windhoek
University of Namibia
Davies, Jim E.
United Kingdom, Oxford
University of Oxford
Devin, Justine
France, Paris
Cnrs Centre National de la Recherche Scientifique
Djannati-Ataï, Arache
France, Paris
Cnrs Centre National de la Recherche Scientifique
Dmytriiev, Anton
France, Paris
Université Psl
Donath, Axel
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Doroshenko, V. T.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Dreyer, Lenté
South Africa, Potchefstroom
North-west University
Du Plessis, Louis
South Africa, Potchefstroom
North-west University
Duffy, C. A.
United Kingdom, Leicester
University of Leicester
Egberts, Kathrin
Germany, Potsdam
Universität Potsdam
Einecke, Sabrina
Australia, Adelaide
The University of Adelaide
Emery, Gabriel
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Ernenwein, Jean Pierre
France, Marseille
Aix Marseille Université
Feijen, K.
Australia, Adelaide
The University of Adelaide
Fegan, Stephen J.
France, Palaiseau
Institut Polytechnique de Paris
Fiasson, Armand
France, Chambery
Université Savoie Mont Blanc
Fichet de Clairfontaine, Gaëtan
France, Paris
Université Psl
Fontaine, Gérard
France, Palaiseau
Institut Polytechnique de Paris
Funk, Stefan
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Füssling, Matthias
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Gabici, Stefano
France, Paris
Cnrs Centre National de la Recherche Scientifique
Gallant, Yves A.
France, Montpellier
Université de Montpellier
Ghafourizade, S.
Germany, Heidelberg
Universität Heidelberg
Giavitto, Gianluca
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Giunti, Luca
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
France, Paris
Cnrs Centre National de la Recherche Scientifique
Glawion, Dorit Eisenacher
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Glicenstein, Jean François
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Grondin, Marie Hélène
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Hattingh, S.
South Africa, Potchefstroom
North-west University
Haupt, Maria
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Hermann, German
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hinton, James A.J.A.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hofmann, Werner
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Hoischen, Clemens
Germany, Potsdam
Universität Potsdam
Holch, T. L.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Holler, Markus
Austria, Innsbruck
Universität Innsbruck
Hörbe, Mario
United Kingdom, Oxford
University of Oxford
Horns, Dieter
Germany, Hamburg
Universität Hamburg
Huang, Zhiqiu
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Huber, David
Austria, Innsbruck
Universität Innsbruck
Jamrozy, Marek
Poland, Krakow
Uniwersytet Jagielloński
Jankowsky, David
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Jankowsky, Felix
Germany, Heidelberg
Universität Heidelberg
Joshi, Vikas
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Jung-Richardt, Ira V.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Kasai, Eli K.
Namibia, Windhoek
University of Namibia
Katarzyński, Krzysztof
Poland, Torun
Uniwersytet Mikołaja Kopernika w Toruniu
Katz, Ulrich F.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Khangulyan, D.
Japan, Tokyo
Rikkyo University
Khélifi, Bruno
France, Paris
Cnrs Centre National de la Recherche Scientifique
Klepser, Stefan
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Klužniak, Wlodzimierz
Poland, Warszawa
Polish Academy of Sciences
Komin, Nukri
South Africa, Johannesburg
University of the Witwatersrand
Konno, Ruslan
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Kosack, Karl
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Kostunin, Dmitriy G.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Kreter, Michael
South Africa, Potchefstroom
North-west University
Kukec Mezek, Gašper
Sweden, Vaxjo
Linnaeus University, Växjö
Kundu, A.
South Africa, Potchefstroom
North-west University
Lamanna, Giovanni
France, Chambery
Université Savoie Mont Blanc
Le Stum, S.
France, Marseille
Aix Marseille Université
Lemière, Anne
France, Paris
Cnrs Centre National de la Recherche Scientifique
Lemoine-Goumard, Marianne
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Lenain, Jean Philippe
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Leuschner, Fabian
Germany, Tubingen
Eberhard Karls Universität Tübingen
Luashvili, Anna
France, Paris
Université Psl
Lohse, Thomas
Germany, Berlin
Humboldt-universität zu Berlin
Lypova, Iryna
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
MacKey, Jonathan
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Majumdar, Jhilik
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Malyshev, Denys
Germany, Tubingen
Eberhard Karls Universität Tübingen
Malyshev, Denys V.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Marandon, Vincent
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Marchegiani, Paolo
South Africa, Johannesburg
University of the Witwatersrand
Marcowith, Alexandre
France, Montpellier
Université de Montpellier
Mares, Arnaud
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Martí.-Devesa, G.
Austria, Innsbruck
Universität Innsbruck
Marx, Ramin
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Germany, Heidelberg
Universität Heidelberg
Maurin, Guillaume T.
France, Chambery
Université Savoie Mont Blanc
Meintjes, Pieter J.
South Africa, Bloemfontein
University of the Free State
Meyer, Manuel S.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Mitchell, Alison M.W.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Moderski, Rafaƚ
Poland, Warszawa
Polish Academy of Sciences
Mohrmann, Lars
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Montanari, Alessandro
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Moore, Christopher J.
United Kingdom, Leicester
University of Leicester
Moulin, Emmanuel
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Muller, Jacques
France, Palaiseau
Institut Polytechnique de Paris
Murach, Thomas
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Nakashima, Kaori
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Nayerhoda, Amid
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
de Naurois, Mathieu
France, Palaiseau
Institut Polytechnique de Paris
Ndiyavala, Hambeleleni
South Africa, Potchefstroom
North-west University
Niemiec, J.
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Noel, Angel Priyana
Poland, Krakow
Uniwersytet Jagielloński
O'Brien, Paul T.
United Kingdom, Leicester
University of Leicester
Ohm, Stefan
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Olivera-Nieto, Laura
Germany, Heidelberg
Max-planck-institut Für Kernphysik
De Oña Wilhelmi, Emma
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Ostrowski, Michałl
Poland, Krakow
Uniwersytet Jagielloński
Panter, M.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Panny, Sebastian
Austria, Innsbruck
Universität Innsbruck
Parsons, Robert Daniel
Germany, Berlin
Humboldt-universität zu Berlin
Peron, Giada
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Pita, Santiago
France, Paris
Cnrs Centre National de la Recherche Scientifique
Poireau, Vincent
France, Chambery
Université Savoie Mont Blanc
Prokhorov, Dmitry A.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Prokoph, Heike
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Pühlhofer, Gerd
Germany, Tubingen
Eberhard Karls Universität Tübingen
Punch, Michael
Sweden, Vaxjo
Linnaeus University, Växjö
France, Paris
Cnrs Centre National de la Recherche Scientifique
Quirrenbach, Andreas
Germany, Heidelberg
Universität Heidelberg
Reichherzer, Patrick
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Reimer, Anita
Austria, Innsbruck
Universität Innsbruck
Reimer, Olaf
Austria, Innsbruck
Universität Innsbruck
Renaud, Matthieu
France, Montpellier
Université de Montpellier
Rieger, Frank M.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Rowell, Gavin P.
Australia, Adelaide
The University of Adelaide
Rudak, Bronisław
Poland, Warszawa
Polish Academy of Sciences
Sahakian, Vardan H.
Armenia, Yerevan
Yerevan Physics Institute
Sánchez, David A.
France, Chambery
Université Savoie Mont Blanc
Santangelo, Andrea E.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Sasaki, Manami
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Schüssler, Fabian
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Schutte, Hester M.
South Africa, Potchefstroom
North-west University
Schwanke, Ullrich
Germany, Berlin
Humboldt-universität zu Berlin
Seyffert, Albertus S.
South Africa, Potchefstroom
North-west University
Shapopi, J. N.S.
Namibia, Windhoek
University of Namibia
Shiningayamwe, K.
Namibia, Windhoek
University of Namibia
Sinha, Atreyee
France, Paris
Cnrs Centre National de la Recherche Scientifique
Sol, Hélène
France, Paris
Université Psl
Stawarz, Łukasz
Poland, Krakow
Uniwersytet Jagielloński
Sun, Lei
Netherlands, Amsterdam
Universiteit Van Amsterdam
Steenkamp, R.
Namibia, Windhoek
University of Namibia
Stegmann, Christian
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Germany, Potsdam
Universität Potsdam
Steppa, Constantin
Germany, Potsdam
Universität Potsdam
Takahashi, Tadayuki
Japan, Tokyo
The University of Tokyo
Terrier, Régis
France, Paris
Cnrs Centre National de la Recherche Scientifique
Tluczykont, Martin
Germany, Hamburg
Universität Hamburg
Tuffs, Richard J.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Uchiyama, Yasunobu
Japan, Tokyo
Rikkyo University
van der Walt, D. J.
South Africa, Potchefstroom
North-west University
Van Eldik, Christopher
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
van Rensburg, Carlo
Namibia, Windhoek
University of Namibia
van Soelen, Brian V.A.N.
South Africa, Bloemfontein
University of the Free State
Vasileiadis, Georges
France, Montpellier
Université de Montpellier
Venter, Christo
South Africa, Potchefstroom
North-west University
Vincent, P.
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Viana, Aion A.
Brazil, Sao Paulo
Universidade de São Paulo
Vink, Jacco S.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Völk, Heinrich J.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Wagner, Stefan J.
Germany, Heidelberg
Universität Heidelberg
White, Richard J.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Wierzcholska, Alicja
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Germany, Heidelberg
Universität Heidelberg
Zacharias, Michael
South Africa, Potchefstroom
North-west University
France, Paris
Université Psl
Zanin, Roberta
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Zdziarski, Andrzej A.
Poland, Warszawa
Polish Academy of Sciences
Zech, Andreas
France, Paris
Université Psl
Zhu, Sylvia J.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Z̀ywucka, Natalia
South Africa, Potchefstroom
North-west University
Statistics
Citations: 8
Authors: 197
Affiliations: 38
Identifiers
Doi:
10.3847/1538-4357/abff59
ISSN:
0004637X
Research Areas
Environmental
Study Design
Cross Sectional Study