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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
MAGIC observations provide compelling evidence of hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7
Astronomy and Astrophysics, Volume 671, Article A12, Year 2023
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Description
Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capable of accelerating cosmic rays (CRs) to ∼ PeV energies. However, conclusive observational evidence for this has not yet been found. The SNR G106.3+2.7, detected at 1- 100 TeV energies by different γ-ray facilities, is one of the most promising PeVatron candidates. This SNR has a cometary shape, which can be divided into a head and a tail region with different physical conditions. However, in which region the 100 TeV emission is produced has not yet been identified because of the limited position accuracy and/or angular resolution of existing observational data. Additionally, it remains unclear as to whether the origin of the γ-ray emission is leptonic or hadronic. Aims. With the better angular resolution provided by new MAGIC data compared to earlier γ-ray datasets, we aim to reveal the acceleration site of PeV particles and the emission mechanism by resolving the SNR G106.3+2.7 with 0.1 resolution at TeV energies. Methods. We observed the SNR G106.3+2.7 using the MAGIC telescopes for 121.7 h in total - after quality cuts - between May 2017 and August 2019. The analysis energy threshold is ∼0.2 TeV, and the angular resolution is 0.07-0.1. We examined the γ-ray spectra of different parts of the emission, whilst benefitting from the unprecedented statistics and angular resolution at these energies provided by our new data. We also used measurements at other wavelengths such as radio, X-rays, GeV γ-rays, and 10 TeV γ-rays to model the emission mechanism precisely. Results. We detect extended γ-ray emission spatially coincident with the radio continuum emission at the head and tail of SNR G106.3+2.7. The fact that we detect a significant γ-ray emission with energies above 6.0 TeV from only the tail region suggests that the emissions above 10 TeV detected with air shower experiments (Milagro, HAWC, Tibet ASγ and LHAASO) are emitted only from the SNR tail. Under this assumption, the multi-wavelength spectrum of the head region can be explained with either hadronic or leptonic models, while the leptonic model for the tail region is in contradiction with the emission above 10 TeV and X-rays. In contrast, the hadronic model could reproduce the observed spectrum at the tail by assuming a proton spectrum with a cutoff energy of ∼1 PeV for that region. Such high-energy emission in this middle-aged SNR (4-10 kyr) can be explained by considering a scenario where protons escaping from the SNR in the past interact with surrounding dense gases at present. Conclusions. The γ-ray emission region detected with the MAGIC telescopes in the SNR G106.3+2.7 is extended and spatially coincident with the radio continuum morphology. The multi-wavelength spectrum of the emission from the tail region suggests proton acceleration up to ∼PeV, while the emission mechanism of the head region could either be hadronic or leptonic. © The Authors 2023.
Authors & Co-Authors
Abe, H.
Japan, Tokyo
The University of Tokyo
Acciari, Victor A.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Agudo, Iván N.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Ansoldi, Stefano
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Italy, Rome
International Center for Relativistic Astrophysics
Antonelli, Lucio Angelo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Arbet-Engels, Axel
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Arcaro, Cornelia H.E.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Asano, Katsuaki
Japan, Tokyo
The University of Tokyo
Baack, Dominik
Germany, Dortmund
Technische Universität Dortmund
Babić, Ana
Croatia, Zagreb
University of Zagreb
Baquero Larriva, A.
Spain, Madrid
Universidad Complutense de Madrid
Barres de Almeida, Ulisses
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
Barrio, Juan Abel
Spain, Madrid
Universidad Complutense de Madrid
Batković, Ivana
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Baxter, J. R.
Japan, Tokyo
The University of Tokyo
Becerra González, Josefa
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Bednarek, Włodzimierz
Poland, Lodz
University of Lodz
Bernardos, Maria Isabel
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Berti, Alessio
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Besenrieder, Jüergen
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Bhattacharyya, Wrijupan
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Bigongiari, C.
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Biland, Adrian
Switzerland, Zurich
Eth Zürich
Blanch, Oscar
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Bonnoli, Giacomo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Bošnjak, Željka M.
Croatia, Zagreb
University of Zagreb
Busetto, Giovanni
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Carosi, Roberto
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Castro-Tirado, A. J.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Ceribella, Giovanni
Japan, Tokyo
The University of Tokyo
Chai, Yating
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Chilingarian, A. A.
Armenia, Yerevan
Yerevan Physics Institute
Cikota, Stefan
Croatia, Zagreb
University of Zagreb
Colombo, E.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Contreras, José Luis
Spain, Madrid
Universidad Complutense de Madrid
Cortina, J.
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Covino, Stefano
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
D'Amico, Giacomo
Norway, Bergen
Universitetet I Bergen
D'Elia, Valerio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
da Vela, Paolo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Dazzi, Francesco
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
De Angelis, Alessandro D.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
De Lotto, Barbara
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Delfino, Manuel C.
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Germany, Bochum
Ruhr-universitat Bochum
Delgado, J.
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Germany, Bochum
Ruhr-universitat Bochum
Depaoli, Davide
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Di Pierro, F.
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Di Venere, Leonardo
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
do Souto Espiñeira, Elia
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Dominis-Prester, Dijana
Croatia, Rijeka
University of Rijeka
Donini, Alice
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Dorner, Daniela
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Doro, Michele
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Elsässer, Dominik
Germany, Dortmund
Technische Universität Dortmund
Emery, Gabriel
Switzerland, Geneva
Université de Genève
Escudero, Juan
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Fallah Ramazani, Vandad
Finland, Turku
Turun Yliopisto
Austria, Innsbruck
Universität Innsbruck
Fattorini, Alicia
Germany, Dortmund
Technische Universität Dortmund
Font, Ll L.
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Fruck, Christian
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Fukami, Satoshi
Switzerland, Zurich
Eth Zürich
Fukazawa, Yasushi
Japan, Higashihiroshima
Hiroshima University
García López, Ramón J.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Garczarczyk, Markus
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Gasparyan, Sargis
Armenia, Yerevan
Icranet-armenia
Gaug, Markus
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Giglietto, Nicola
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Giordano, Francesco
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Godinović, Nikola
Croatia, Split
University of Split
Green, David M.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Green, Jarred Gershon
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hadasch, Daniela
Japan, Tokyo
The University of Tokyo
Hahn, A.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hassan, Tarek
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Herrera, Juan Carlos Helo
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Hrupec, Dario
Croatia, Osijek
Sveučilište Josipa Jurja Strossmayera u Osijeku
Hütten, Moritz
Japan, Tokyo
The University of Tokyo
Imazawa, Ryo
Japan, Higashihiroshima
Hiroshima University
Inada, Tomohiro
Japan, Tokyo
The University of Tokyo
Iotov, Roman
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Ishio, Kazuma
Poland, Lodz
University of Lodz
Kerszberg, Daniel
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Kubo, Hidetoshi
Japan, Tokyo
The University of Tokyo
Kushida, Junko
Japan, Tokyo
Tokai University
Lamastra, Alessandra
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Lelas, Damir
Croatia, Split
University of Split
Leone, Francesco
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Lindfors, Elina J.
Finland, Turku
Turun Yliopisto
Lombardi, Saverio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Longo, Francesco
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Poland, Lodz
University of Lodz
López-Coto, Rubén
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
López-Oramas, Alicia
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Loporchio, S.
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
MacHado de Oliveira Fraga, B.
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
Majumdar, Pratik
Poland, Lodz
University of Lodz
India, Kolkata
Saha Institute of Nuclear Physics
Makariev, M. V.
Bulgaria, Sofia
The Bulgarian Academy of Sciences
Maneva, Galina M.
Bulgaria, Sofia
The Bulgarian Academy of Sciences
Manganaro, Marina
Croatia, Rijeka
University of Rijeka
Mangano, Salvatore
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Mannheim, Karl
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Mariotti, M.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Mazin, Daniel
Japan, Tokyo
The University of Tokyo
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Mirzoyan, Razmik G.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Moralejo, Abelardo
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Moreno, Victòria
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Nakamori, Takeshi
Japan, Yamagata
Yamagata University
Nava, Lara
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Neustroev, Vitaly V.
Finland, Oulu
Oulun Yliopisto
Nievas-Rosillo, M.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Nilsson, Kari
Finland, Turku
Turun Yliopisto
Nishijima, Kyoshi
Japan, Tokyo
Tokai University
Paiano, Simona
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Palatiello, Michele
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Paneque, David
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Paoletti, Riccardo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Paredes, Josep Maria
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Persic, Massimo
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Prada Moroni, Pier Giorgio
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Prandini, Elisa
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Principe, Giacomo
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Rhode, Wolfgang
Germany, Dortmund
Technische Universität Dortmund
Ribó, Marc
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Rico, Javier R.
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Righi, Chiara
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Sahakyan, Narek V.
Armenia, Yerevan
Icranet-armenia
Saturni, Francesco Gabriele
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Schleicher, Bernd
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Schweizer, Thomas
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Sitarek, Julian
Poland, Lodz
University of Lodz
Sliusar, Vitalii
Switzerland, Geneva
Université de Genève
Sobczyńska, Dorota
Poland, Lodz
University of Lodz
Stamerra, Antonio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Tajima, Hiroyasu
Japan, Nagoya
Nagoya University
Tavecchio, Fabrizio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Terzić, Tomislav
Croatia, Rijeka
University of Rijeka
Teshima, Masahiro
Japan, Tokyo
The University of Tokyo
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Tutone, A.
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Vazquez Acosta, Monica
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Vigorito, Carlo Francesco
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Vitale, V.
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Vovk, Ievgen
Japan, Tokyo
The University of Tokyo
Walter, Roland
Switzerland, Geneva
Université de Genève
Statistics
Citations: 5
Authors: 142
Affiliations: 45
Identifiers
Doi:
10.1051/0004-6361/202244931
ISSN:
00046361
Research Areas
Environmental