Accès ouvert déclaré
2021
preprint
Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020
V. A. Acciari, L. A. Antonelli, A. Arbet Engels, M. Artero, K. Asano, Andrés Baquero, U. Barres de Almeida, I. Batković, E. Bernardini, A. Berti, J. Besenrieder, A. Biland, O. Blanch, G. Bonnoli, G. Busetto, R. Carosi, M. Cerruti, S. Cikota, E. Colombo, J.L. Contreras, J. Cortina, S. Covino, Giacomo D’Amico, F. Dazzi, B. De Lotto, M. Delfino, J. Delgado, C. Delgado Mendez, Davide Depaoli, F. Di Pierro, L. Di Venere, E. Do Souto Espiñeira, D. Dominis Prester, D. Dorner, D. Elsäesser, V. Fallah Ramazanı, A. Fattorini, G. Ferrara, L. Font, C. Fruck, S. Fukami, M. Garczarczyk, M. Gaug, N. Giglietto, P. Gliwny, N. Godinović, D. Green, D. Hadasch, A. Hahn, Lea Heckmann, J. Herrera, D. Hrupec, Moritz Hütten, S. Inoue, K. Ishio, J. Jormanainen, Y. Kobayashi, H. Kubo, J. Kushida, D. Lelas, F. Leone, S. Lombardi, F. Longo, A. López-Oramas, S. Loporchio, B. Fraga, C. Maggio, M. Makariev, M. Manganaro, K. Mannheim, M. Mariotti, M. Martínez, D. Mazin, S. Menchiari, S. Mender, T. Miener, M. Minev, J. M. Miranda, R. Mirzoyan, E. Molina, A. Moralejo, Daniel Morcuende, V. Moreno, E. Moretti, V. Neustroev, C. Nigro, K. Nilsson, K. Noda, T. Oka, J. Otero-Santos, S. Paiano, L. Pavletić, C. Perennes, E. Prandini, Chaitanya Priyadarshi, I. Puljak, M. Ribó, J. Rico, A. Rugliancich, T. Saito, S. Sakurai, K. Satalecka, F. G. Saturni, K. Schmidt, T. Schweizer, J. Sitarek, I. Šnidarić, D. Sobczyńska, Alessia Spolon, A. Stamerra, D. Strom, M. Strzys, Y. Suda, T. Surić, M. Takahashi, F. Tavecchio, P. Temnikov, T. Terzić, L. Tosti, S. Truzzi, Antonio Tutone, Juliane van Scherpenberg, G. Vanzo, Sofia Ventura, V. Verguilov, V. Vitale, Ievgen Vovk, M. Will, C. Wunderlich, F. D’Ammando, T. Hovatta, W. Max-Moerbeck, A. C. S. Readhead, I. Björklund, M. Tornikoski
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61Institutions déclarées
16Pays d’affiliation déclarés
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Le résumé fourni par la source
We report multiwavelength observations of the gravitationally lensed blazar QSO B0218+357 in 2016-2020. Optical, X-ray and GeV flares were detected. The contemporaneous MAGIC observations do not show significant very-high-energy (VHE, >= 100 GeV) gamma-ray emission. The lack of enhancement in radio emission measured by OVRO indicates the multi-zone nature of the emission from this object. We constrain the VHE duty cycle of the source to be < 16 2014-like flares per year (95% confidence). For the first time for this source, a broadband low-state SED is constructed with a deep exposure up to the VHE range. A flux upper limit on the low-state VHE gamma-ray emission of an order of magnitude below that of the 2014 flare is determined. The X-ray data are used to fit the column density of (8.10 +- 0.93 stat ) x 10^21 cm^-2 of the dust in the lensing galaxy. VLBI observations show a clear radio core and jet components in both lensed images, yet no significant movement of the components is seen. The radio measurements are used to model the source-lens-observer geometry and determine the magnifications and time delays for both components. The quiescent emission is modeled with the high-energy bump explained as a combination of synchrotron-self-Compton and external Compton emission from a region located outside of the broad line region. The bulk of the low-energy emission is explained as originating from a tens-of-parsecs scale jet.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Astrophysics and Cosmic PhenomenaGamma-ray bursts and supernovaeNeutrino Physics Research