The putative center in NGC 1052
Artikel i vetenskaplig tidskrift, 2024
Context. Many active galaxies harbor powerful relativistic jets, however, the detailed mechanisms of their formation and acceleration remain poorly understood. Aims. To investigate the area of jet acceleration and collimation with the highest available angular resolution, we study the innermost region of the bipolar jet in the nearby low-ionization nuclear emission-line region (LINER) galaxy NGC 1052. Methods. We combined observations of NGC 1052 taken with VLBA, GMVA, and EHT over one week in the spring of 2017. Our study is focused on the size and continuum spectrum of the innermost region containing the central engine and the footpoints of both jets. We employed a synchrotron-self absorption model to fit the continuum radio spectrum and we combined the size measurements from close to the central engine out to ∼1 pc to study the jet collimation. Results. For the first time, NGC 1052 was detected with the EHT, providing a size of the central region in-between both jet bases of 43 μas perpendicular to the jet axes, corresponding to just around 250 RS (Schwarzschild radii). This size estimate supports previous studies of the jets expansion profile which suggest two breaks of the profile at around 3 × 103 RS and 1 × 104 RS distances to the core. Furthermore, we estimated the magnetic field to be 1.25 Gauss at a distance of 22 μas from the central engine by fitting a synchrotron-self absorption spectrum to the innermost emission feature, which shows a spectral turn-over at ∼130 GHz. Assuming a purely poloidal magnetic field, this implies an upper limit on the magnetic field strength at the event horizon of 2.6 × 104 Gauss, which is consistent with previous measurements. Conclusions. The complex, low-brightness, double-sided jet structure in NGC 1052 makes it a challenge to detect the source at millimeter (mm) wavelengths. However, our first EHT observations have demonstrated that detection is possible up to at least 230 GHz. This study offers a glimpse through the dense surrounding torus and into the innermost central region, where the jets are formed. This has enabled us to finally resolve this region and provide improved constraints on its expansion and magnetic field strength.
Techniques: high angular resolution
Galaxies: Seyfert
Methods: observational
Galaxies: jets
Galaxies: active
Techniques: interferometric
Författare
A. K. Baczko
M. Kadler
Julius-Maximilians Universität Würzburg
Eduardo Ros
Max-Planck-Gesellschaft
Christian M. Fromm
Max-Planck-Gesellschaft
M. Wielgus
Max-Planck-Gesellschaft
M. Perucho
Universitat de Valencia
T.P. Krichbaum
Max-Planck-Gesellschaft
Mislav Baloković
Yale University
Lindy Blackburn
Harvard University
Chi Kwan Chan
University of Arizona
S. Issaoun
Harvard-Smithsonian Center for Astrophysics
Makoto Inoue
Max-Planck-Gesellschaft
L. Ricci
Max-Planck-Gesellschaft
Kazunori Akiyama
Harvard University
E. Albentosa-Ruiz
Universitat de Valencia
Antxon Alberdi
Instituto de Astrofisica de Andalucía (IAA)
Walter Alef
Max-Planck-Gesellschaft
Juan-Carlos Algaba
University of Malaya
Richard Anantua
Harvard University
K. Asada
Academia Sinica
R. Azulay
Max-Planck-Gesellschaft
U. Bach
Max-Planck-Gesellschaft
David Ball
University of Arizona
Bidisha Bandyopadhyay
Universidad de Concepción
John Barrett
Massachusetts Institute of Technology (MIT)
M. Bauböck
The Grainger College of Engineering
Bradford A. Benson
Fermi National Accelerator Laboratory
Dan Bintley
East Asian Observatory
R. Blundell
Harvard-Smithsonian Center for Astrophysics
K. L. Bouman
California Institute of Technology (Caltech)
G. C. Bower
Academia Sinica
Hope Boyce
McGill University
M. Bremer
Institut de Radioastronomie Millimétrique (IRAM)
C. D. Brinkerink
Radboud Universiteit
Roger Brissenden
Harvard University
Silke Britzen
Max-Planck-Gesellschaft
Avery E. Broderick
Perimeter Institute for Theoretical Physics
D. Broguière
Institut de Radioastronomie Millimétrique (IRAM)
Thomas Bronzwaer
Radboud Universiteit
Sandra Bustamente
University of Massachusetts
Do Young Byun
Korea Astronomy and Space Science Institute
J. E. Carlstrom
University of Chicago
Chiara Ceccobello
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
A. Chael
Princeton University
Dominic O. Chang
Harvard University
Koushik Chatterjee
Harvard University
S. Chatterjee
Cornell University
Ming Tang Chen
Academia Sinica
Yongjun Chen
Shanghai Astronomical Observatory
X. P. Cheng
Korea Astronomy and Space Science Institute
I. Cho
Instituto de Astrofisica de Andalucía (IAA)
Pierre Christian
Fairfield University
Nicholas S. Conroy
Harvard-Smithsonian Center for Astrophysics
John Conway
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
James M. Cordes
Cornell University
Thomas M. Crawford
University of Chicago
G. Crew
Massachusetts Institute of Technology (MIT)
Alejandro Cruz-Osorio
Johann Wolfgang Goethe Universität Frankfurt am Main
Yuzhu Cui
Zhejiang Lab
Rohan Dahale
Instituto de Astrofisica de Andalucía (IAA)
Jordy Davelaar
Princeton University
Mariafelicia De Laurentis
Johann Wolfgang Goethe Universität Frankfurt am Main
R. P. Deane
University of Witwatersrand
Jessica Dempsey
East Asian Observatory
Gregory Desvignes
Max-Planck-Gesellschaft
Jason Dexter
JILA
Vedant Dhruv
The Grainger College of Engineering
Indu K. Dihingia
Shanghai Jiao Tong University
S. Doeleman
Harvard University
Sean Dougall
University of Arizona
Sergio A. Dzib
Max-Planck-Gesellschaft
Ralph P. Eatough
Max-Planck-Gesellschaft
Razieh Emami
Harvard-Smithsonian Center for Astrophysics
H.D. Falcke
Radboud Universiteit
Joseph R. Farah
Las Cumbres Observatory Global Telescope Network
V. Fish
Massachusetts Institute of Technology (MIT)
E. Fomalont
National Radio Astronomy Observatory
H.D. Falcke
University of Arizona
Marianna Foschi
Instituto de Astrofisica de Andalucía (IAA)
R. Fraga-Encinas
Radboud Universiteit
William T. Freeman
Massachusetts Institute of Technology
P. Friberg
East Asian Observatory
Antonio Fuentes
Instituto de Astrofisica de Andalucía (IAA)
Peter Galison
Harvard University
Charles F. Gammie
The Grainger College of Engineering
Roberto Garcia
Institut de Radioastronomie Millimétrique (IRAM)
Olivier Gentaz
Institut de Radioastronomie Millimétrique (IRAM)
Boris Georgiev
University of Arizona
C. Goddi
Universidade de Sao Paulo (USP)
R. Gold
Syddansk Universitet
Arturo I. Gómez-Ruiz
Instituto Nacional de Astrofísica, Óptica y Electrońica
J. L. Gomez
Instituto de Astrofisica de Andalucía (IAA)
Minfeng Gu
Shanghai Astronomical Observatory
M. Gurwell
Harvard-Smithsonian Center for Astrophysics
K. Hada
Graduate School of Pharmaceutical Sciences
Daryl Haggard
McGill University
Kari Haworth
Harvard-Smithsonian Center for Astrophysics
Michael H. Hecht
Massachusetts Institute of Technology (MIT)
R. Hesper
Rijksuniversiteit Groningen
Dirk Heumann
University of Arizona
Luis C. Ho
Beijing University of Technology
P. T. P. Ho
Academia Sinica
Mareki Honma
National Astronomical Observatory of Japan
Chih Wei L. Huang
Academia Sinica
Lei Huang
Shanghai Astronomical Observatory
D. Hughes
Instituto Nacional de Astrofísica, Óptica y Electrońica
C. M. V. Impellizzeri
National Radio Astronomy Observatory
Makoto Inoue
Academia Sinica
David J. James
ASTRAVEO
Buell T. Jannuzi
University of Arizona
Britton Jeter
Academia Sinica
Wu Jiang
Shanghai Astronomical Observatory
Alejandra Jimenez-Rosales
Radboud Universiteit
Michael D. Johnson
Harvard University
S.G. Jorstad
Boston University
Abhishek V. Joshi
The Grainger College of Engineering
Taehyun Jung
Korea Astronomy and Space Science Institute
Mansour Karami
Perimeter Institute for Theoretical Physics
R. Karuppusamy
Max-Planck-Gesellschaft
Tomohisa Kawashima
University of Tokyo
G. Keating
Harvard-Smithsonian Center for Astrophysics
M. M. Kettenis
Joint Institute for VLBI in Europe (JIVE)
Dong-Jin Kim
Max-Planck-Gesellschaft
Jae-Young Kim
Max-Planck-Gesellschaft
Jongsoo Kim
Korea Astronomy and Space Science Institute
Junhan Kim
Korea Advanced Institute of Science and Technology (KAIST)
R. Karuppusamy
National Astronomical Observatory of Japan
Jun Yi Koay
Academia Sinica
Prashant Kocherlakota
Johann Wolfgang Goethe Universität Frankfurt am Main
Yutaro Kofuji
National Astronomical Observatory of Japan
Shoko Koyama
Academia Sinica
C. Kramer
Institut de Radioastronomie Millimétrique (IRAM)
Joana A. Kramer
Max-Planck-Gesellschaft
M. Bremer
Max-Planck-Gesellschaft
Greg Lindahl
Academia Sinica
Michael Lindqvist
Radboud Universiteit
Tod R. Lauer
National Optical Astronomy Observatory
Daeyoung Lee
The Grainger College of Engineering
Sang Sung Lee
Korea Astronomy and Space Science Institute
Po Kin Leung
Chinese University of Hong Kong
Aviad Levis
California Institute of Technology (Caltech)
Zhiyuan Li
Nanjing University
R. Lico
Instituto de Astrofisica de Andalucía (IAA)
Greg Lindahl
Harvard-Smithsonian Center for Astrophysics
Michael Lindqvist
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Mikhail Lisakov
Pontificia Universidad Católica de Valparaíso
Jun Liu
Max-Planck-Gesellschaft
Kuo Liu
Max-Planck-Gesellschaft
Elisabetta Liuzzo
Istituto di Radioastronomia
Wen-Ping Lo
Academia Sinica
A. P. Lobanov
Max-Planck-Gesellschaft
L. Loinard
Universidad Nacional Autónoma de México
Colin Lonsdale
Massachusetts Institute of Technology (MIT)
Amy E. Lowitz
University of Arizona
Sandra Bustamente
Max-Planck-Gesellschaft
N. R. Macdonald
Max-Planck-Gesellschaft
Jirong Mao
Yunnan Observatories
Nicola Marchili
Max-Planck-Gesellschaft
S. Markoff
Anton Pannekoek Institute for Astronomy
D. P. Marrone
University of Arizona
A. Marscher
Boston University
Ivan Marti-Vidal
Universitat de Valencia
S. Matsushita
Academia Sinica
Lynn D. Matthews
Massachusetts Institute of Technology (MIT)
Lia Medeiros
Princeton University
K. Menten
Max-Planck-Gesellschaft
Daniel Michalik
University of Chicago
Izumi Mizuno
East Asian Observatory
Yosuke Mizuno
Johann Wolfgang Goethe Universität Frankfurt am Main
James M. Moran
Harvard University
Kotaro Moriyama
Johann Wolfgang Goethe Universität Frankfurt am Main
M. Mościbrodzka
Radboud Universiteit
Wanga Mulaudzi
Anton Pannekoek Institute for Astronomy
C. Müller
Max-Planck-Gesellschaft
Hendrik Müller
Max-Planck-Gesellschaft
A. Mus
Universita degli Studi di Cagliari
Gibwa Musoke
Radboud Universiteit
I. Myserlis
Institut de Radioastronomie Millimétrique (IRAM)
Andrew Nadolski
University of Illinois
H. Nagai
National Astronomical Observatory of Japan
N. M. Nagar
Universidad de Concepción
Dhanya G. Nair
Universidad de Concepción
Masanori Nakamura
Academia Sinica
Gopal Narayanan
University of Massachusetts
Iniyan Natarajan
Harvard University
Antonios Nathanail
Johann Wolfgang Goethe Universität Frankfurt am Main
Santiago Navarro Fuentes
Institut de Radioastronomie Millimétrique (IRAM)
Joseph Neilsen
Villanova University
R. Neri
Institut de Radioastronomie Millimétrique (IRAM)
Chunchong Ni
Perimeter Institute for Theoretical Physics
A. Noutsos
Max-Planck-Gesellschaft
Michael A. Nowak
Washington University in St. Louis
Junghwan Oh
Joint Institute for VLBI in Europe (JIVE)
Hiroki Okino
National Astronomical Observatory of Japan
Héctor Olivares
Centre For Research And Development In Mathematics And Applications (CIDMA)
G.N. Ortiz-León
Max-Planck-Gesellschaft
Tomoaki Oyama
National Astronomical Observatory of Japan
Feryal Özel
Georgia Institute of Technology
Daniel C.M. Palumbo
Harvard University
Georgios Filippos Paraschos
Max-Planck-Gesellschaft
Jongho Park
Academia Sinica
Harriet Parsons
East Asian Observatory
N. Patel
Harvard-Smithsonian Center for Astrophysics
U. L. Pen
Academia Sinica
Dominic W. Pesce
Harvard University
Vincent Piétu
Institut de Radioastronomie Millimétrique (IRAM)
Richard L. Plambeck
University of California
Aleksandar PopStefanija
University of Massachusetts
Oliver Porth
Johann Wolfgang Goethe Universität Frankfurt am Main
Felix M. Pötzl
Max-Planck-Gesellschaft
Ben Prather
The Grainger College of Engineering
Jorge A. Preciado-López
Perimeter Institute for Theoretical Physics
G. Principe
Istituto di Radioastronomia
Dimitrios Psaltis
Georgia Institute of Technology
Hung-Yi Pu
Academia Sinica
Venkatessh Ramakrishnan
Universidad de Concepción
R. Rao
Harvard-Smithsonian Center for Astrophysics
M.G. Rawlings
East Asian Observatory
Alexander W. Raymond
Harvard University
Angelo Ricarte
Harvard University
Bart Ripperda
Perimeter Institute for Theoretical Physics
F. Roelofs
Harvard University
A.E.E. Rogers
Massachusetts Institute of Technology (MIT)
C. Romero-Cañizales
Academia Sinica
Arash Roshanineshat
University of Arizona
H. Rottmann
Max-Planck-Gesellschaft
A. Roy
Max-Planck-Gesellschaft
Ignacio Ruiz
Institut de Radioastronomie Millimétrique (IRAM)
C. Ruszczyk
Massachusetts Institute of Technology (MIT)
Kazi L.J. Rygl
Istituto di Radioastronomia
S. Sanchez
Institut de Radioastronomie Millimétrique (IRAM)
David Sánchez-Arguelles
Instituto Nacional de Astrofísica, Óptica y Electrońica
M. Sánchez Portal
Institut de Radioastronomie Millimétrique (IRAM)
Mahito Sasada
National Astronomical Observatory of Japan
Kaushik Satapathy
University of Arizona
T. Savolainen
Max-Planck-Gesellschaft
T. Savolainen
University of Massachusetts
Jonathan Schonfeld
Harvard-Smithsonian Center for Astrophysics
K. Schuster
Institut de Radioastronomie Millimétrique (IRAM)
Lijing Shao
Max-Planck-Gesellschaft
Zhi Qiang Shen
Shanghai Astronomical Observatory
Des Small
Joint Institute for VLBI in Europe (JIVE)
B. W. Sohn
Korea Astronomy and Space Science Institute
J. SooHoo
Instituto de Astrofisica de Andalucía (IAA)
León David Sosapanta Salas
Anton Pannekoek Institute for Astronomy
Kamal Souccar
University of Massachusetts
Joshua S. Stanway
University of Central Lancashire
He Sun
Beijing University of Technology
Fumie Tazaki
National Astronomical Observatory of Japan
Alexandra J. Tetarenko
University of Lethbridge
Paul Tiede
Harvard University
R. P. J. Tilanus
University of Arizona
M. Titus
Massachusetts Institute of Technology (MIT)
Pablo Torne
Max-Planck-Gesellschaft
Teresa Toscano
Instituto de Astrofisica de Andalucía (IAA)
E. Traianou
Max-Planck-Gesellschaft
Tyler Trent
University of Arizona
S. Trippe
Seoul National University
Matthew Turk
University of Illinois
I. van Bemmel
Joint Institute for VLBI in Europe (JIVE)
H. J. van Langevelde
Universiteit Leiden
Daniel R. van Rossum
Radboud Universiteit
Jesse Vos
Radboud Universiteit
Jan Wagner
Max-Planck-Gesellschaft
D. Ward-Thompson
University of Central Lancashire
John Wardle
Brandeis University
Jasmin E. Washington
University of Arizona
J. Weintroub
Harvard University
Robert Wharton
Max-Planck-Gesellschaft
K. Wiik
Tuorla Observatory
Gunther Witzel
Max-Planck-Gesellschaft
Michael F. Wondrak
Radboud Universiteit
George N. Wong
Princeton University
Qingwen Wu
Huazhong University of Science and Technology
Nitika Yadlapalli
California Institute of Technology (Caltech)
Paul Yamaguchi
Harvard-Smithsonian Center for Astrophysics
Aristomenis Yfantis
Radboud Universiteit
Doosoo Yoon
Anton Pannekoek Institute for Astronomy
A. Young
Radboud Universiteit
K. Young
Harvard-Smithsonian Center for Astrophysics
Ziri Younsi
Johann Wolfgang Goethe Universität Frankfurt am Main
Wei Yu
Harvard-Smithsonian Center for Astrophysics
Feng Yuan
Fudan University
Ye-Fei Yuan
University of Science and Technology of China
A.J. Zensus
Max-Planck-Gesellschaft
Shuo Zhang
Michigan State University
G. Y. Zhao
Max-Planck-Gesellschaft
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 692 A205Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
DOI
10.1051/0004-6361/202450898
Relaterade dataset
URI: https://cdsarc.cds.unistra.fr/