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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
HESS J1809-193: A halo of escaped electrons around a pulsar wind nebula?
Astronomy and Astrophysics, Volume 672, Article A103, Year 2023
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Description
Context. HESS J1809-193 is an unassociated very-high-energy γ-ray source located on the Galactic plane. While it has been connected to the nebula of the energetic pulsar PSR J1809-1917, supernova remnants and molecular clouds present in the vicinity also constitute possible associations. Recently, the detection of γ-ray emission up to energies of ∼100 TeV with the HAWC observatory has led to renewed interest in HESS J1809-193. Aims. We aim to understand the origin of the γ-ray emission of HESS J1809-193. Methods. We analysed 93.2 h of data taken on HESS J1809-193 above 0.27 TeV with the High Energy Stereoscopic System (H.E.S.S.), using a multi-component, three-dimensional likelihood analysis. In addition, we provide a new analysis of 12.5 yr of Fermi-LAT data above 1 GeV within the region of HESS J1809-193. The obtained results are interpreted in a time-dependent modelling framework. Results. For the first time, we were able to resolve the emission detected with H.E.S.S. into two components: an extended component (modelled as an elongated Gaussian with a 1-σsemi-major and semi-minor axis of ∼0.62 and ∼0.35, respectively) that exhibits a spectral cutoff at ∼13 TeV, and a compact component (modelled as a symmetric Gaussian with a 1-σradius of ∼0.1) that is located close to PSR J1809-1917 and shows no clear spectral cutoff. The Fermi-LAT analysis also revealed extended γ-ray emission, on scales similar to that of the extended H.E.S.S. component. Conclusions. Our modelling indicates that based on its spectrum and spatial extent, the extended H.E.S.S. component is likely caused by inverse Compton emission from old electrons that form a halo around the pulsar wind nebula. The compact component could be connected to either the pulsar wind nebula or the supernova remnant and molecular clouds. Due to its comparatively steep spectrum, modelling the Fermi-LAT emission together with the H.E.S.S. components is not straightforward. © 2023 The Authors.
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
Berge, David
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Germany, Berlin
Humboldt-universität zu Berlin
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
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
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
Bylund, Tomas
Sweden, Vaxjo
Linnaeus University, Växjö
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
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
Damascène Mbarubucyeye, Jean
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Djannati-Ataï, Arache
France, Paris
Cnrs Centre National de la Recherche Scientifique
Dmytriiev, Anton
South Africa, Potchefstroom
North-west University
Einecke, Sabrina
Australia, Adelaide
The University of Adelaide
Ernenwein, Jean Pierre
France, Marseille
Aix Marseille Université
Feijen, K.
Australia, Adelaide
The University of Adelaide
Filipovíc, Miroslav D.
Australia, Penrith
Western Sydney University
Fontaine, Gérard
France, Palaiseau
Institut Polytechnique de Paris
Füssling, Matthias
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Funk, Stefan
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
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
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, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
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
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
Priyana Noel, A.
Poland, Krakow
Uniwersytet Jagielloński
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
Prokhorov, Dmitry A.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Pühlhofer, Gerd
Germany, Tubingen
Eberhard Karls Universität Tübingen
Punch, Michael
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
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
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
Sol, Hélène
France, Paris
Université Psl
Stawarz, Łukasz
Poland, Krakow
Uniwersytet Jagielloński
Steenkamp, R.
Namibia, Windhoek
University of Namibia
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
Uchiyama, Yasunobu
Japan, Tokyo
Rikkyo University
Van Eldik, Christopher
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
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: 5
Authors: 137
Affiliations: 36
Identifiers
Doi:
10.1051/0004-6361/202245459
ISSN:
00046361
Research Areas
Environmental