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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Detection of extended γ -ray emission around the Geminga pulsar with H.E.S.S.
Astronomy and Astrophysics, Volume 673, Article A148, Year 2023
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Description
Geminga is an enigmatic radio-quiet γ-ray pulsar located at a mere 250 pc distance from Earth. Extended very-high-energy γ-ray emission around the pulsar was discovered by Milagro and later confirmed by HAWC, which are both water Cherenkov detector-based experiments. However, evidence for the Geminga pulsar wind nebula in gamma rays has long evaded detection by imaging atmospheric Cherenkov telescopes (IACTs) despite targeted observations. The detection of γ-ray emission on angular scales ≳2° poses a considerable challenge for the background estimation in IACT data analysis. With recent developments in understanding the complementary background estimation techniques of water Cherenkov and atmospheric Cherenkov instruments, the H.E.S.S. IACT array can now confirm the detection of highly extended γ-ray emission around the Geminga pulsar with a radius of at least 3° in the energy range 0.5-40 TeV. We find no indications for statistically significant asymmetries or energy-dependent morphology. A flux normalisation of (2.8 ± 0.7)×10-12 cm-2 s-1 TeV-1 at 1 TeV is obtained within a 1° radius region around the pulsar. To investigate the particle transport within the halo of energetic leptons around the pulsar, we fitted an electron diffusion model to the data. The normalisation of the diffusion coefficient obtained of D0 = 7.6-1.2+1.5×1027 cm2 s-1, at an electron energy of 100 TeV, is compatible with values previously reported for the pulsar halo around Geminga, which is considerably below the Galactic average. © 2023 EDP Sciences. All rights reserved.
Authors & Co-Authors
Aharonian, F. A.
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Ait Benkhali, F.
Germany, Heidelberg
Universität Heidelberg
Aschersleben, J.
Netherlands, Groningen
Rijksuniversiteit Groningen
Ashkar, Halim
France, Palaiseau
Institut Polytechnique de Paris
Backes, Michael
Namibia, Windhoek
University of Namibia
South Africa, Potchefstroom
North-west University
Barbosa-Martins, V.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Batzofin, Rowan
South Africa, Johannesburg
University of the Witwatersrand
Becherini, Yvonne
France, Paris
Cnrs Centre National de la Recherche Scientifique
Sweden, Vaxjo
Linnaeus University, Växjö
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
Borowska, Jowita
Germany, Berlin
Humboldt-universität zu Berlin
Bouyahiaoui, M.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Bradascio, Federica
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
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
Bruno, B.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Bulk, Tomasz
Poland, Warsaw
University of Warsaw
Burger-Scheidlin, Christopher
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Cangemi, Floriane
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Caroff, Sami
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Casanova, Sabrina
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Celic, J.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Cerruti, Matteo
France, Paris
Cnrs Centre National de la Recherche Scientifique
Chambery, Pauline
France, Bordeaux
Université de Bordeaux
Chand, Tej
South Africa, Potchefstroom
North-west University
Chandra, Sunil
South Africa, Potchefstroom
North-west University
Chen, Andrew W.
South Africa, Johannesburg
University of the Witwatersrand
Chibueze, James O.
South Africa, Potchefstroom
North-west University
Chibueze, O. U.
South Africa, Potchefstroom
North-west University
Cotter, Garret
United Kingdom, Oxford
University of Oxford
Damascène Mbarubucyeye, Jean
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Devin, Justine
France, Montpellier
Université de Montpellier
Djannati-Ataï, Arache
France, Paris
Cnrs Centre National de la Recherche Scientifique
Dmytriiev, Anton
South Africa, Potchefstroom
North-west University
Egberts, Kathrin
Germany, Potsdam
Universität Potsdam
Einecke, Sabrina
Australia, Adelaide
The University of Adelaide
Ernenwein, Jean Pierre
France, Marseille
Aix Marseille Université
Feijen, K.
Australia, Adelaide
The University of Adelaide
Fichet de Clairfontaine, Gaëtan
France, Paris
Université Psl
Filipovíc, Miroslav D.
Australia, Penrith
Western Sydney University
Fontaine, Gérard
France, Palaiseau
Institut Polytechnique de Paris
Füβling, M.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Funk, Seb
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Gabici, Stefano
France, Paris
Cnrs Centre National de la Recherche Scientifique
Gallant, Yves A.
France, Montpellier
Université de Montpellier
Ghafourizadeh, S.
Germany, Heidelberg
Universität Heidelberg
Giavitto, Gianluca
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Giunti, Luca
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
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
Goswami, Pranjupriya
South Africa, Potchefstroom
North-west University
Grolleron, G.
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Grondin, Marie Hélène
France, Bordeaux
Université de Bordeaux
Haerer, L.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
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
Holch, T. L.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Holler, Markus
Austria, Innsbruck
Universität Innsbruck
Horns, Dieter
Germany, Hamburg
Universität Hamburg
Huang, Zhiqiu
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Jamrozy, Marek
Poland, Krakow
Uniwersytet Jagielloński
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
Khélifi, Bruno
France, Paris
Cnrs Centre National de la Recherche Scientifique
Kluźniak, W.
Poland, Warszawa
Polish Academy of Sciences
Komin, Nukri
South Africa, Johannesburg
University of the Witwatersrand
Kosack, Karl
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Kostunin, Dmitriy G.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Lang, Rodrigo Guedes
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Le Stum, S.
France, Marseille
Aix Marseille Université
Leitl, F.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Lemière, Anne
France, Paris
Cnrs Centre National de la Recherche Scientifique
Lemoine-Goumard, Marianne
France, Bordeaux
Université de Bordeaux
Lenain, Jean Philippe
France, Paris
Laboratoire de Physique Nucléaire et de Hautes Energies
Leuschner, Fabian
Germany, Tubingen
Eberhard Karls Universität Tübingen
Lohse, Thomas
Germany, Berlin
Humboldt-universität zu Berlin
Luashvili, Anna
France, Paris
Université Psl
Lypova, Iryna
Germany, Heidelberg
Universität Heidelberg
MacKey, Jonathan
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Malyshev, Denys
Germany, Tubingen
Eberhard Karls Universität Tübingen
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
Marinos, P. D.
Australia, Adelaide
The University of Adelaide
Martí.-Devesa, G.
Austria, Innsbruck
Universität Innsbruck
Marx, Ramin
Germany, Heidelberg
Universität Heidelberg
Maurin, Gilles
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Meintjes, Pieter J.
South Africa, Bloemfontein
University of the Free State
Meyer, Manuel S.
Germany, Hamburg
Universität Hamburg
Mitchell, Alison M.W.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Moderski, Rafaƚ
Poland, Warszawa
Polish Academy of Sciences
Mohrmann, Lars
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Montanari, Alessandro
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Moulin, Emmanuel
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Muller, Jacques
France, Palaiseau
Institut Polytechnique de Paris
Nakashima, Kaori
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
de Naurois, Mathieu
France, Palaiseau
Institut Polytechnique de Paris
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
Panny, Sebastian
Austria, Innsbruck
Universität Innsbruck
Panter, M.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Parsons, Robert Daniel
Germany, Berlin
Humboldt-universität zu Berlin
Peron, Giada
France, Paris
Cnrs Centre National de la Recherche Scientifique
Prokhorov, Dmitry A.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Pühlhofer, Gerd
Germany, Tubingen
Eberhard Karls Universität Tübingen
Quirrenbach, Andreas
Germany, Heidelberg
Universität Heidelberg
Reimer, Anita
Austria, Innsbruck
Universität Innsbruck
Reimer, Olaf
Austria, Innsbruck
Universität Innsbruck
Renaud, Matthieu
France, Montpellier
Université de Montpellier
Reville, Brian
Germany, Heidelberg
Max-planck-institut Für Kernphysik
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
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
Shapopi, J. N.S.
Namibia, Windhoek
University of Namibia
Sinha, Atreyee
France, Montpellier
Université de Montpellier
Sol, Hélène
France, Paris
Université Psl
Stawarz, Łukasz
Poland, Krakow
Uniwersytet Jagielloński
Sushch, Iurii
South Africa, Potchefstroom
North-west University
Takahashi, Tadayuki
Japan, Tokyo
The University of Tokyo
Terrier, Régis
France, Paris
Cnrs Centre National de la Recherche Scientifique
Venter, Christo
South Africa, Potchefstroom
North-west University
Vink, Jacco S.
Netherlands, Amsterdam
Universiteit Van Amsterdam
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
Zacharias, Michael
Germany, Heidelberg
Universität Heidelberg
South Africa, Potchefstroom
North-west University
Zdziarski, Andrzej A.
Poland, Warszawa
Polish Academy of Sciences
Zech, Andreas
France, Paris
Université Psl
Statistics
Citations: 6
Authors: 147
Affiliations: 39
Identifiers
Doi:
10.1051/0004-6361/202245776
ISSN:
00046361
Research Areas
Environmental