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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Testing two-component models on very high-energy gamma-ray-emitting BL Lac objects
Astronomy and Astrophysics, Volume 640, Article A132, Year 2020
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Description
Context. It has become evident that one-zone synchrotron self-Compton models are not always adequate for very high-energy (VHE) gamma-ray-emitting blazars. While two-component models perform better, they are difficult to constrain due to the large number of free parameters. Aims. In this work, we make a first attempt at taking into account the observational constraints from very long baseline interferometry (VLBI) data, long-Term light curves (radio, optical, and X-rays), and optical polarisation to limit the parameter space for a two-component model and test whether or not it can still reproduce the observed spectral energy distribution (SED) of the blazars. Methods. We selected five TeV BL Lac objects based on the availability of VHE gamma-ray and optical polarisation data. We collected constraints for the jet parameters from VLBI observations. We evaluated the contributions of the two components to the optical flux by means of decomposition of long-Term radio and optical light curves as well as modelling of the optical polarisation variability of the objects. We selected eight epochs for these five objects based on the variability observed at VHE gamma rays, for which we constructed the SEDs that we then modelled with a two-component model. Results. We found parameter sets which can reproduce the broadband SED of the sources in the framework of two-component models considering all available observational constraints from VLBI observations. Moreover, the constraints obtained from the long-Term behaviour of the sources in the lower energy bands could be used to determine the region where the emission in each band originates. Finally, we attempt to use optical polarisation data to shed new light on the behaviour of the two components in the optical band. Our observationally constrained two-component model allows explanation of the entire SED from radio to VHE with two co-located emission regions. © ESO 2020.
Authors & Co-Authors
Acciari, Victor A.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Ansoldi, Stefano
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Japan, Tokyo
The University of Tokyo
Antonelli, Lucio Angelo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Arbet-Engels, Axel
Switzerland, Zurich
Eth Zürich
Baack, Dominik
Germany, Dortmund
Technische Universität Dortmund
Babić, Ana
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Banerjee, Biswajit
India, Kolkata
Saha Institute of Nuclear Physics
Barres De Almeida, Ulisses
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
Barrio, Juan Abel
Spain, Madrid
Universidad Complutense de Madrid
Becerra González, Josefa
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Bednarek, Włodzimierz
Poland, Lodz
University of Lodz
Bellizzi, Letizia K.
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Bernardini, Elisa
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Berti, Alessio
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
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, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Busetto, Giovanni
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Carosi, Roberto
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Ceribella, Giovanni
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Cerruti, Matteo
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Chai, Yating
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Chilingarian, A. A.
Armenia, Yerevan
National Academy of Sciences of the Republic of Armenia
Cikota, Stefan
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Colak, S. M.
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Colin, U.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
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
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
D'Elia, Valerio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
da Vela, Paolo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Austria, Innsbruck
Universität Innsbruck
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
Delgado, J.
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Depaoli, Davide
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Di Pierro, F.
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Di Venere, Leonardo
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
do Souto Espiñeira, Elia
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Dominis-Prester, Dijana
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Donini, Alice
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
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
Fallah Ramazani, Vandad
Finland, Turku
Turun Yliopisto
Fattorini, Alicia
Germany, Dortmund
Technische Universität Dortmund
Ferrara, Giovanna
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Foffano, Luca
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Fonseca, M. V.
Spain, Madrid
Universidad Complutense de Madrid
Font, Ll L.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Fruck, Christian
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Fukami, Satoshi
Japan, Tokyo
The University of Tokyo
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
National Academy of Sciences of the Republic of Armenia
Gaug, Markus
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Giglietto, Nicola
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Giordano, Francesco
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Godinović, Nikola
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Green, David M.
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
Herrera, Juan Carlos Helo
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Hoang, John K.
Spain, Madrid
Universidad Complutense de Madrid
Hrupec, Dario
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Hütten, Moritz
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Inada, Tomohiro
Japan, Tokyo
The University of Tokyo
Inoue, Susumu
Japan, Tokyo
The University of Tokyo
Ishio, Kazuma
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Iwamura, Yuki
Japan, Tokyo
The University of Tokyo
Jouvin, Léa
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Kerszberg, Daniel
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Kubo, Hidetoshi
Japan, Tokyo
The University of Tokyo
Kushida, Junko
Japan, Tokyo
The University of Tokyo
Lamastra, Alessandra
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Lelas, Damir
Croatia, Rijeka
Faculty of Physics, University of Rijeka
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
Italy, Trieste
Università Degli Studi Di Trieste
López-Moya, Marcos
Spain, Madrid
Universidad Complutense de Madrid
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, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
MacHado de Oliveira Fraga, B.
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
Maggio, Camilla
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Majumdar, Pratik
India, Kolkata
Saha Institute of Nuclear Physics
Makariev, M. V.
Bulgaria, Sofia
The Bulgarian Academy of Sciences
Mallamaci, Manuela
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Maneva, Galina M.
Bulgaria, Sofia
The Bulgarian Academy of Sciences
Manganaro, Marina
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Mannheim, Karl
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Maraschi, Laura
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Mariotti, M.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Martínez, Manel
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Mazin, Daniel
Japan, Tokyo
The University of Tokyo
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Minev, Milen S.
Bulgaria, Sofia
The Bulgarian Academy of Sciences
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, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Moretti, Elena
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Munar-Adrover, Pere
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Neustroev, Vitaly V.
Finland, Turku
Turun Yliopisto
Nilsson, Kari
Finland, Turku
Turun Yliopisto
Nishijima, Kyoshi
Japan, Tokyo
The University of Tokyo
Noda, Koji
Japan, Tokyo
The University of Tokyo
Nogués, Leyre
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
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
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
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
Puljak, Ivica
Croatia, Rijeka
Faculty of Physics, University of Rijeka
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
National Academy of Sciences of the Republic of Armenia
Schleicher, Bernd
Germany, Wurzburg
Julius-maximilians-universität Würzburg
Schmidt, Kasper Borello
Germany, Dortmund
Technische Universität Dortmund
Schweizer, Thomas
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Sitarek, Julian
Poland, Lodz
University of Lodz
Sobczyńska, Dorota
Poland, Lodz
University of Lodz
Stamerra, Antonio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Takahashi, Mitsunari N.
Japan, Tokyo
The University of Tokyo
Tavecchio, Fabrizio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Terzić, Tomislav
Croatia, Rijeka
Faculty of Physics, University of Rijeka
Teshima, Masahiro
Japan, Tokyo
The University of Tokyo
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Vazquez Acosta, Monica
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Vigorito, Carlo Francesco
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Vitale, V.
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Vovk, Ievgen
Japan, Tokyo
The University of Tokyo
Nievas-Rosillo, M.
Germany, Hamburg
Deutsches Elektronen-synchrotron Desy
Arcaro, Cornelia H.E.
South Africa, Potchefstroom
North-west University
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
de Palma, Francesco
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Hodges, Mark W.
United States, Pasadena
California Institute of Technology
Hovatta, Talvikki
Finland, Turku
Turun Yliopisto
Finland, Espoo
Aalto University
Kiehlmann, Sebastian
Greece, Heraklion
Foundation for Research and Technology-hellas
Greece, Rethymnon
University of Crete
Max-Moerbeck, Walter
Chile, Santiago
Universidad de Chile
Readhead, Anthony C.S.
United States, Pasadena
California Institute of Technology
Reeves, Rodrigo A.
Chile, Biobio
Universidad de Concepcion
Takalo, Leo O.
Finland, Turku
Turun Yliopisto
Reinthal, Riho
Finland, Turku
Turun Yliopisto
Berdyugin, Andrei V.
Finland, Turku
Turun Yliopisto
Oksanen, Arto
Finland, Hankasalmi
Hankasalmen Observatorion
Bachev, Rumen S.
Bulgaria, Stara Zagora
Institute of Astronomy Bulgarian Academy of Sciences
Strigachev, Anton A.
Bulgaria, Stara Zagora
Institute of Astronomy Bulgarian Academy of Sciences
Kehusmaa, Petri
Unknown Affiliation
Statistics
Citations: 9
Authors: 156
Affiliations: 38
Identifiers
Doi:
10.1051/0004-6361/202037811
ISSN:
00046361
Research Areas
Environmental