Dynamics and geometry of the inner sub-parsec-scale jet in 3C 279 observed with the Event Horizon Telescope
Hendrik MüllerNational Radio Astronomy ObservatoryS. D. von FellenbergMax Planck Institute for Radio AstronomyAi-Ling ZengInstituto de Astrofísica de Andalucía-CSICPaul TiedeBlack Hole Initiative at Harvard UniversityT. P. KrichbaumMax-Planck-Institut für RadioastronomieRoman GoldInstitut für Theoretische Physik, Universität HeidelbergT. SavolainenAalto University Metsähovi Radio ObservatoryJae-Young KimDepartment of Physics, Ulsan National Institute of Science and Technology (UNIST)Sijia Peng Teresa ToscanoShanghai Astronomical ObservatoryTeresa ToscanoMax-Planck-Institut für RadioastronomieMichaël JanssenDepartment of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud UniversityBoris GeorgievSteward Observatory and Department of Astronomy, University of ArizonaDhanya G. NairAstronomy Department, Universidad de ConcepciónIniyan NatarajanBlack Hole Initiative at Harvard UniversityLindy BlackburnCenter for Astrophysics | Harvard & SmithsonianKazunori AkiyamaMassachusetts Institute of Technology Haystack ObservatoryEzequiel Albentosa-RuízDepartament d’Astronomia i Astrofísica, Universitat de ValènciaA. AlberdiInstituto de Astrofísica de AndalucíaWalter AlefMax-Planck-Institut für RadioastronomieJuan Carlos AlgabaCentre for Astronomy and Astrophysics Research, Department of Physics, Faculty of Science, Universiti MalayaRohan Ganesh AmanagantiCenter for Gravitation, Cosmology and Astrophysics, Department of Physics, University of Wisconsin–MilwaukeeRichard AnantuaDepartment of Physics & Astronomy, The University of Texas at San Antonio, One UTSA Circle, San AntonioEleni AntonopoulouDepartment of Physics, National and Kapodistrian University of Athens, PanepistimiopolisKeiichi AsadaInstitute of Astronomy and Astrophysics, Academia SinicaRebecca AzulayMax-Planck-Institut für RadioastronomieAnne-Kathrin BaczkoMax-Planck-Institut für RadioastronomieDavid BallSteward Observatory and Department of Astronomy, University of ArizonaB. BandyopadhyayAstronomy Department, Universidad de ConcepciónJohn BarrettMassachusetts Institute of Technology Haystack ObservatoryMichi BauböckDepartment of Physics, University of IllinoisBradford A. BensonDepartment of Astronomy and Astrophysics, University of ChicagoDan BintleyEast Asian ObservatoryR. BlundellCenter for Astrophysics | Harvard & SmithsonianKatherine L. BoumanCalifornia Institute of TechnologyGeoffrey C. BowerEast Asian ObservatoryMichael BremerInstituto de Radioastronomía MilimétricaRoger BrissendenCenter for Astrophysics | Harvard & SmithsonianS. BritzenMax-Planck-Institut für RadioastronomieAvery E. BroderickPerimeter Institute for Theoretical PhysicsDominique BroguièreInstituto de Radioastronomía MilimétricaThomas BronzwaerDepartment of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud UniversitySandra BustamanteDouglas Ferreira CarlosInstituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São PauloJ. E. CarlstromDepartment of Astronomy and Astrophysics, University of ChicagoAndrew ChaelPrinceton Gravity Initiative, Jadwin Hall, Princeton UniversityDominic O. ChangData Science Institute, University of ArizonaChin-Shin ChangDepartment of Astronomy, University of GenevaKoushik ChatterjeeBlack Hole Initiative at Harvard UniversityErandi ChavezCenter for Astrophysics | Harvard & SmithsonianXiaopeng ChengAcademia SinicaYongjun ChenKey Laboratory of Radio Astronomy and Technology, Chinese Academy of SciencesP. M. ChichuraDepartment of Physics, University of ChicagoIlje ChoKorea Astronomy and Space Science InstituteNicholas S. ConroyDepartment of Astronomy, University of Illinois at Urbana-ChampaignJ. E. ConwayDepartment of Physics and Astronomy, Chalmers University of Technology, Onsala Space ObservatoryThomas M. CrawfordDepartment of Astronomy and Astrophysics, University of ChicagoG. CrewMassachusetts Institute of Technology Haystack ObservatoryAlejandro Cruz-OsorioInstituto de Astronomía, Universidad Nacional Autónoma de México (UNAM)Yuzhu CuiInstitute of Astrophysics, Central China Normal UniversityBrandon CurdBlack Hole Initiative at Harvard UniversityRohan DahaleInstituto de Astrofísica de Andalucía-CSICJordy DavelaarDepartment of Astrophysical Sciences, Peyton Hall, Princeton UniversityJoost de KleuverDepartment of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud UniversityMariafelicia De LaurentisDipartimento di Fisica “E. Pancini”, Università di Napoli “Federico II”Roger DeaneWits Centre for Astrophysics, University of the WitwatersrandJason DexterJILA and Department of Astrophysical and Planetary Sciences, University of ColoradoVedant DhruvDepartment of Physics, University of IllinoisIndu K. DihingiaInstitute of Fundamental Physics and Quantum Technology, & School of Physical Science and Technology, Ningbo University, NingboSheperd S. DoelemanCenter for Astrophysics | Harvard & SmithsonianSergio A. DzibMax-Planck-Institut für RadioastronomieRazieh EmamiCenter for Astrophysics | Harvard & SmithsonianH. FalckeDepartment of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud UniversityJoseph FarahDepartment of Physics, University of CaliforniaVincent L. FishMassachusetts Institute of Technology Haystack ObservatoryE. B. FomalontNational Radio Astronomy ObservatoryH. Alyson FordSteward Observatory and Department of Astronomy, University of ArizonaMarianna FoschiInstituto de Astrofísica de Andalucía-CSICRaquel Fraga-EncinasDepartment of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud UniversityWilliam T. FreemanDepartment of Electrical Engineering and Computer Science, Massachusetts Institute of TechnologyPer FribergEast Asian ObservatoryChristian M. FrommInstitut für Theoretische Physik und Astrophysik, Universität WürzburgAntonio FuentesInstituto de Astrofísica de AndalucíaPeter GalisonBlack Hole Initiative at Harvard UniversityCharles F. GammieDepartment of Astronomy, University of Illinois at Urbana-ChampaignRoberto GarcíaInstitut de Radioastronomie Millimétrique (IRAM)Olivier GentazInstituto de Radioastronomía MilimétricaC. GoddiDipartimento di Fisica, Università degli Studi di CagliariJosé L. GómezConsejo Nacional de Humanidades, Ciencia y TecnologíaBrissa Gómez MillerInstituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de MéxicoMinfeng GuKey Laboratory for Research in Galaxies and Cosmology, Chinese Academy of SciencesMark GurwellCenter for Astrophysics | Harvard & SmithsonianKazuhiro HadaGraduate School of Science, Nagoya City UniversityDaryl HaggardDepartment of Physics, McGill UniversityRonald HesperNOVA Sub-mm Instrumentation Group, Kapteyn Astronomical Institute, University of GroningenDirk HeumannSteward Observatory and Department of Astronomy, University of ArizonaMareki HonmaDepartment of Astronomy, School of Physics, Peking UniversityPaul T. P. HoInstitute of Astronomy and Astrophysics, Academia Sinica
2026en
ABI
Annotatsiya
The 2021 Event Horizon Telescope observations resolve the innermost jet region of the blazar 3C 279 with unprecedented detail. The reconstructed images consistently reveal a compact core elongated nearly orthogonal to the large-scale jet axis. This rarely observed morphology recurs across multiple epochs and from 22–230 GHz and is therefore intrinsic rather than an imaging artifact. Geometric model fitting identifies several components with apparent speeds up to β app ∼ 10, requiring bulk Lorentz factors Γ ≳ 10.3 and constraining viewing angles to extremely small values (≲1°). Rest-frame brightness temperatures are systematically low ( T B ∼ 10 9 –10 10 K), consistent with optically thin emission at 230 GHz. These results suggest that the jet bends toward the observer on sub-parsec scales, producing strong relativistic beaming. Possible drivers of the observed jet bending and temporal evolution include the jet’s interaction with the interstellar medium, kink or Kelvin-Helmholtz instabilities, magnetic reconnection near the horizon, or binary-induced precession. However, the current temporal coverage of VLBI data remains insufficient to distinguish between these mechanisms. Continued multifrequency VLBI monitoring will be essential to constraining the dynamics and geometry of the jet base in 3C 279.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
0 ta iqtibos0 ta foydalanilgan manba