First detection of VHE gamma-ray signal from the FSRQ TON 0599
MAGIC CollaborationK. AbeJapanese MAGIC Group: Department of Physics, Tokai University, Hiratsuka, 259-1292 Kanagawa, JapanS. AbeJapanese MAGIC Group: Institute for Cosmic Ray ResearchJayant AbhirETH Zürich, CH-8093 Zürich, SwitzerlandA. AbhishekUniversità di Siena and INFN Pisa, I-53100 Siena, ItalyV. A. AcciariInstitut de Física d'Altes EnergiesA. Aguasca-CabotUniversitat de Barcelona, ICCUB, IEEC-UB, E-08028 Barcelona, SpainI. AgudoInstituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, 18008, Granada, SpainT. AnielloNational Institute for AstrophysicsStefano AnsoldiUniversità di Udine and INFN Trieste, I-33100 Udine, ItalyL. A. AntonelliNational Institute for AstrophysicsA. Arbet EngelsMax-Planck-Institut für Physik, D-85748 Garching, GermanyArcaro, C.Università di Padova and INFN, I-35131 Padova, ItalyK. AsanoJapanese MAGIC Group: Institute for Cosmic Ray ResearchA. BabićCroatian MAGIC Group: University of Zagreb, Faculty of Electrical Engineering and ComputingU. Barres de AlmeidaCentro Brasileiro de Pesquisas FísicasJ. A. BarrioIPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, SpainL. Barrios-JiménezInstituto de Astrofísica de Canarias and Dpto. de Astrofísica, Universidad de La Laguna, E-38200, La Laguna, Tenerife, SpainIvana BatkovićUniversità di Padova and INFN, I-35131 Padova, ItalyJ. BaxterJapanese MAGIC Group: Institute for Cosmic Ray ResearchJ. Becerra GonzálezInstituto de Astrofísica de Canarias and Dpto. de Astrofísica, Universidad de La Laguna, E-38200, La Laguna, Tenerife, SpainWłodzimierz BednarekUniversity of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, PolandE. BernardiniUniversità di Padova and INFN, I-35131 Padova, ItalyJ. BerneteCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, SpainA. BertiMax-Planck-Institut für Physik, D-85748 Garching, GermanyJ. BesenriederMax-Planck-Institut für Physik, D-85748 Garching, GermanyC. BigongiariNational Institute for AstrophysicsA. BilandETH Zürich, CH-8093 Zürich, SwitzerlandO. BlanchInstitut de Física d'Altes EnergiesG. BonnoliNational Institute for AstrophysicsŽ. BošnjakCroatian MAGIC Group: University of Zagreb, Faculty of Electrical Engineering and ComputingE. BronziniNational Institute for AstrophysicsI. BurelliInstitut de Física d'Altes EnergiesA. Campoy-OrdazDepartament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, SpainA. CarosiNational Institute for AstrophysicsR. CarosiUniversità di Pisa and INFN Pisa, I-56126 Pisa, ItalyM. Carretero-CastrilloUniversitat de Barcelona, ICCUB, IEEC-UB, E-08028 Barcelona, SpainA. J. Castro‐TiradoInstituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, 18008, Granada, SpainD. CerasoleINFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, ItalyG. CeribellaMax-Planck-Institut für Physik, D-85748 Garching, GermanyY. ChaiJapanese MAGIC Group: Institute for Cosmic Ray ResearchA. CifuentesCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, SpainJ. L. ContrerasIPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, SpainJ. CortinaCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, SpainS. CovinoNational Institute for AstrophysicsG. D'AmicoDepartment for Physics and Technology, University of Bergen, NorwayP. Da VelaNational Institute for AstrophysicsF. DazziNational Institute for AstrophysicsA. De AngelisUniversità di Padova and INFN, I-35131 Padova, ItalyB. De LottoUniversità di Udine and INFN Trieste, I-33100 Udine, ItalyRaniere de MenezesINFN MAGIC Group: INFN Sezione di Torino and Università degli Studi di Torino, I-10125 Torino, ItalyM. DelfinoInstitut de Física d'Altes EnergiesJ. DelgadoInstitut de Física d'Altes EnergiesC. Delgado MendezCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, SpainF. Di PierroINFN MAGIC Group: INFN Sezione di Torino and Università degli Studi di Torino, I-10125 Torino, ItalyR. Di TriaINFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, ItalyL. Di VenereINFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, ItalyA. DineshIPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, SpainD. Dominis PresterCroatian MAGIC Group: University of Rijeka, Faculty of Physics, 51000 Rijeka, CroatiaA. DoniniNational Institute for AstrophysicsD. DornerUniversität Würzburg, D-97074 Würzburg, GermanyMattia DoroUniversità di Padova and INFN, I-35131 Padova, ItalyL. EisenbergerUniversität Würzburg, D-97074 Würzburg, GermanyD. ElsaesserTechnische Universität Dortmund, D-44221 Dortmund, GermanyJuan EscuderoInstituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, 18008, Granada, SpainL. FoffanoNational Institute for AstrophysicsL. FontDepartament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, SpainS. FröseTechnische Universität Dortmund, D-44221 Dortmund, GermanyS. FukamiETH Zürich, CH-8093 Zürich, SwitzerlandY. FukazawaJapanese MAGIC Group: Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, JapanM. GarczarczykDeutsches Elektronen-SynchrotronS. GasparyanArmenian MAGIC Group: ICRANet-Armenia, 0019 Yerevan, ArmeniaM. GaugDepartament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, SpainJ. G. Giesbrecht PaivaCentro Brasileiro de Pesquisas FísicasGiglietto, N.INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, ItalyF. GiordanoINFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, ItalyP. GliwnyUniversity of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, PolandN. GodinovićCroatian MAGIC Group: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval ArchitectureT. GradetzkeTechnische Universität Dortmund, D-44221 Dortmund, GermanyR. GrauInstitut de Física d'Altes EnergiesD. GreenMax-Planck-Institut für Physik, D-85748 Garching, GermanyJ. G. GreenMax-Planck-Institut für Physik, D-85748 Garching, GermanyP. GüntherUniversität Würzburg, D-97074 Würzburg, GermanyD. HadaschJapanese MAGIC Group: Institute for Cosmic Ray ResearchA. HahnMax-Planck-Institut für Physik, D-85748 Garching, GermanyTarek A. HassanCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, SpainL. HeckmannMax-Planck-Institut für Physik, D-85748 Garching, GermanyJ. Herrera LlorenteInstituto de Astrofísica de Canarias and Dpto. de Astrofísica, Universidad de La Laguna, E-38200, La Laguna, Tenerife, SpainD. HrupecCroatian MAGIC Group: Josip Juraj Strossmayer University of Osijek, Department of Physics, 31000 Osijek, CroatiaR. ImazawaJapanese MAGIC Group: Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, JapanD. IsrayelyanArmenian MAGIC Group: ICRANet-Armenia, 0019 Yerevan, ArmeniaI. Jiménez MartínezMax-Planck-Institut für Physik, D-85748 Garching, GermanyJ. Jiménez QuilesInstitut de Física d'Altes EnergiesJenni JormanainenFinnish MAGIC Group: Finnish Centre for Astronomy with ESO, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, FinlandS. KankkunenFinnish MAGIC Group: Finnish Centre for Astronomy with ESO, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, FinlandD. KerszbergInstitut de Física d'Altes EnergiesM. KhachatryanArmenian MAGIC Group: ICRANet-Armenia, 0019 Yerevan, ArmeniaJulius KonradTechnische Universität Dortmund, D-44221 Dortmund, GermanyP. M. KouchFinnish MAGIC Group: Finnish Centre for Astronomy with ESO, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, FinlandH. KuboJapanese MAGIC Group: Institute for Cosmic Ray Research
arXiv (Cornell University)repository2026
ABI
Аннотация
TON\,0599 (z=0.7247) belongs to the few flat spectrum radio quasars (FSRQs) detected in the very high energy (VHE, $E > 100$\,GeV) gamma-ray band. Its redshift makes it currently one of the farthest VHE gamma-ray sources. It was detected for the first time with the MAGIC telescopes on 2017 December 15, and observed until December 29. The flux reached a maximum of about 50 per cent of the Crab Nebula flux above 80 GeV on the second night of observation, after which we witnessed a gradual decrease of the flux. The VHE gamma-ray spectrum connects smoothly to the one in the high energy ($E > 100$\,MeV) band obtained from simultaneous observations with {\textit Fermi}-LAT. It features a cut-off at energies around 50\,GeV, indicating the location of the gamma-ray emission zone beyond the broad line region. In addition, we were able to follow the spectral evolution during the fading phase of the flare. Multiwavelength analysis based on observations in optical, near-infrared, and radio bands acquired by the Whole Earth Blazar Telescope (WEBT) Collaboration from November to March, as well as observations in X-ray and optical--UV bands with instruments on board the \textit{Swift} satellite, shows strong correlation between different bands. We model the broadband emission with a simple one-zone leptonic model, where the high-energy peak is predominantly produced by external Compton (EC) scattering of photons from the dusty torus.
Темы
Идентификаторы
Цитирования и источники
Цитирований: 0Использованных источников: 0
Показатели — AkademScholar · Скоро