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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations
Astrophysical Journal Letters, Volume 950, No. 2, Article L16, Year 2023
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Description
Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe. However, the origin, strength, and morphology of this intergalactic magnetic field (IGMF) remain unknown. Lower limits on (or indirect detection of) the IGMF can be obtained from observations of high-energy gamma rays from distant blazars. Gamma rays interact with the extragalactic background light to produce electron-positron pairs, which can subsequently initiate electromagnetic cascades. The gamma-ray signature of the cascade depends on the IGMF since it deflects the pairs. Here we report on a new search for this cascade emission using a combined data set from the Fermi Large Area Telescope and the High Energy Stereoscopic System. Using state-of-The-Art Monte Carlo predictions for the cascade signal, our results place a lower limit on the IGMF of B > 7.1 × 10-16 G for a coherence length of 1 Mpc even when blazar duty cycles as short as 10 yr are assumed. This improves on previous lower limits by a factor of 2. For longer duty cycles of 104 (107) yr, IGMF strengths below 1.8 × 10-14 G (3.9 × 10-14 G) are excluded, which rules out specific models for IGMF generation in the early universe. © 2023. The Author(s).
Authors & Co-Authors
Aharonian, Felix
Ireland, Dublin
Institiúid Ard-lénn Bhaile Átha Cliath
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Aschersleben, J.
Netherlands, Groningen
Rijksuniversiteit Groningen
Backes, Michael
Namibia, Windhoek
University of Namibia
South Africa, Potchefstroom
North-west University
Barbosa Martins, V. Barbosa
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Batzofin, Rowan
Germany, Potsdam
Universität Potsdam
Becherini, Yvonne
France, Paris
Cnrs Centre National de la Recherche Scientifique
Sweden, Vaxjo
Linnaeus University, Växjö
Bi, Baiyang
Germany, Tubingen
Eberhard Karls Universität Tübingen
Bouyahiaoui, M.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
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
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
de Bony, M.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Egberts, Kathrin
Germany, Potsdam
Universität Potsdam
Ernenwein, Jean Pierre
France, Marseille
Aix Marseille Université
Fichet de Clairfontaine, Gaëtan
France, Paris
Université Psl
Filipovíc, Miroslav D.
Australia, Penrith
Western Sydney University
Fontaine, Gérard
France, Palaiseau
Institut Polytechnique de Paris
Füssling, Matthias
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Gabici, Stefano
France, Paris
Cnrs Centre National de la Recherche Scientifique
Ghafourizadeh, S.
Germany, Heidelberg
Universität Heidelberg
Giavitto, Gianluca
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
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
Grondin, Marie Hélène
France, Bordeaux
Université de Bordeaux
Haerer, L.
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
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
Khatoon, Rukaiya
South Africa, Potchefstroom
North-west University
Khélifi, Bruno
France, Paris
Cnrs Centre National de la Recherche Scientifique
Klužniak, Wlodzimierz
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
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
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
Martí.-Devesa, G.
Austria, Innsbruck
Universität Innsbruck
Marx, Ramin
Germany, Heidelberg
Universität Heidelberg
Meyer, Manuel S.
Germany, Hamburg
Universität Hamburg
Denmark, Odense
Syddansk Universitet
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
Murach, Thomas
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Nakashima, Kaori
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Niemiec, J.
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
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
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
Prokoph, Heike
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
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
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
Sánchez, David A.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
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
Sol, Hélène
France, Paris
Université Psl
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
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
South Africa, Potchefstroom
North-west University
Germany, Heidelberg
Universität Heidelberg
Zdziarski, Andrzej A.
Poland, Warszawa
Polish Academy of Sciences
Z̀ywucka, Natalia
South Africa, Potchefstroom
North-west University
Statistics
Citations: 6
Authors: 120
Affiliations: 39
Identifiers
Doi:
10.3847/2041-8213/acd777
ISSN:
20418205
Research Areas
Environmental