Resolving the Inner Parsec of the Blazar J1924-2914 with the Event Horizon Telescope - Archive ouverte HAL Access content directly
Journal Articles The Astrophysical Journal Year : 2022

Resolving the Inner Parsec of the Blazar J1924-2914 with the Event Horizon Telescope

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Sara Issaoun
  • Function : Author
Maciek Wielgus
  • Function : Author
Svetlana Jorstad
  • Function : Author
Thomas P. Krichbaum
  • Function : Author
Lindy Blackburn
  • Function : Author
Michael Janssen
  • Function : Author
Chi-Kwan Chan
  • Function : Author
Dominic W. Pesce
  • Function : Author
José L. Gómez
  • Function : Author
Kazunori Akiyama
  • Function : Author
Monika Mościbrodzka
  • Function : Author
Iván Martí-Vidal
  • Function : Author
Andrew Chael
  • Function : Author
Rocco Lico
  • Function : Author
Jun Liu
  • Function : Author
Venkatessh Ramakrishnan
  • Function : Author
Mikhail Lisakov
  • Function : Author
Antonio Fuentes
  • Function : Author
Guang-Yao Zhao
  • Function : Author
Kotaro Moriyama
  • Function : Author
Avery E. Broderick
  • Function : Author
Paul Tiede
  • Function : Author
Nicholas R. Macdonald
  • Function : Author
Yosuke Mizuno
  • Function : Author
Efthalia Traianou
  • Function : Author
Laurent Loinard
  • Function : Author
Jordy Davelaar
  • Function : Author
Mark Gurwell
  • Function : Author
Ru-Sen Lu
  • Function : Author
Antxon Alberdi
  • Function : Author
Walter Alef
  • Function : Author
Juan Carlos Algaba
  • Function : Author
Richard Anantua
  • Function : Author
Keiichi Asada
  • Function : Author
Rebecca Azulay
  • Function : Author
Uwe Bach
  • Function : Author
Anne-Kathrin Baczko
  • Function : Author
David Ball
  • Function : Author
Mislav Baloković
  • Function : Author
John Barrett
  • Function : Author
Michi Bauböck
  • Function : Author
Bradford A. Benson
  • Function : Author
Dan Bintley
  • Function : Author
Raymond Blundell
  • Function : Author
Wilfred Boland
  • Function : Author
Katherine L. Bouman
  • Function : Author
Geoffrey C. Bower
  • Function : Author
Hope Boyce
  • Function : Author
Michael Bremer
  • Function : Author
Christiaan D. Brinkerink
  • Function : Author
Roger Brissenden
  • Function : Author
Silke Britzen
  • Function : Author
Dominique Broguiere
  • Function : Author
Thomas Bronzwaer
  • Function : Author
Sandra Bustamante
  • Function : Author
Do-Young Byun
  • Function : Author
John E. Carlstrom
  • Function : Author
Chiara Ceccobello
  • Function : Author
Koushik Chatterjee
  • Function : Author
Shami Chatterjee
  • Function : Author
Ming-Tang Chen
  • Function : Author
Yongjun Chen
  • Function : Author
Ilje Cho
  • Function : Author
Pierre Christian
  • Function : Author
Nicholas S. Conroy
  • Function : Author
John E. Conway
  • Function : Author
James M. Cordes
  • Function : Author
Thomas M. Crawford
  • Function : Author
Geoffrey B. Crew
  • Function : Author
Alejandro Cruz-Osorio
  • Function : Author
Yuzhu Cui
  • Function : Author
Mariafelicia De Laurentis
  • Function : Author
Roger Deane
  • Function : Author
Jessica Dempsey
  • Function : Author
Jason Dexter
  • Function : Author
Sheperd S. Doeleman
  • Function : Author
Vedant Dhruv
  • Function : Author
Sergio Abraham Dzib Quijano
  • Function : Author
Ralph P. Eatough
  • Function : Author
Razieh Emami
  • Function : Author
Heino Falcke
  • Function : Author
Joseph Farah
  • Function : Author
Vincent L. Fish
  • Function : Author
Ed Fomalont
  • Function : Author
H. Alyson Ford
  • Function : Author
Raquel Fraga-Encinas
  • Function : Author
William T. Freeman
  • Function : Author
Per Friberg
  • Function : Author
Christian M. Fromm
  • Function : Author
Peter Galison
  • Function : Author
Charles F. Gammie
  • Function : Author
Roberto García
  • Function : Author
Olivier Gentaz
  • Function : Author
Boris Georgiev
  • Function : Author
Ciriaco Goddi
  • Function : Author
Roman Gold
  • Function : Author
Arturo I. Gómez-Ruiz
  • Function : Author
Minfeng Gu
  • Function : Author
Kazuhiro Hada
  • Function : Author
Daryl Haggard
  • Function : Author
Michael H. Hecht
  • Function : Author
Ronald Hesper
  • Function : Author
Luis C. Ho
  • Function : Author
Paul Ho
  • Function : Author
Mareki Honma
  • Function : Author
Chih-Wei L. Huang
  • Function : Author
Lei Huang
  • Function : Author
David H. Hughes
  • Function : Author
Shiro Ikeda
  • Function : Author
C. M. Violette Impellizzeri
  • Function : Author
Makoto Inoue
  • Function : Author
David J. James
  • Function : Author
Buell T. Jannuzi
  • Function : Author
Britton Jeter
  • Function : Author
Wu Jiang
  • Function : Author
Alejandra Jimenez-Rosales
  • Function : Author
Michael D. Johnson
  • Function : Author
Abhishek V. Joshi
  • Function : Author
Taehyun Jung
  • Function : Author
Mansour Karami
  • Function : Author
Ramesh Karuppusamy
  • Function : Author
Tomohisa Kawashima
  • Function : Author
Garrett K. Keating
  • Function : Author
Mark Kettenis
  • Function : Author
Dong-Jin Kim
  • Function : Author
Jae-Young Kim
  • Function : Author
Jongsoo Kim
  • Function : Author
Junhan Kim
  • Function : Author
Motoki Kino
  • Function : Author
Jun Yi Koay
  • Function : Author
Prashant Kocherlakota
  • Function : Author
Yutaro Kofuji
  • Function : Author
Patrick M. Koch
  • Function : Author
Shoko Koyama
  • Function : Author
Carsten Kramer
  • Function : Author
Michael Kramer
  • Function : Author
Cheng-Yu Kuo
  • Function : Author
Noemi La Bella
  • Function : Author
Tod R. Lauer
  • Function : Author
Daeyoung Lee
  • Function : Author
Sang-Sung Lee
  • Function : Author
Po Kin Leung
  • Function : Author
Aviad Levis
  • Function : Author
Zhiyuan Li
  • Function : Author
Rocco Lico
  • Function : Author
Greg Lindahl
  • Function : Author
Michael Lindqvist
  • Function : Author
Kuo Liu
  • Function : Author
Elisabetta Liuzzo
  • Function : Author
Wen-Ping Lo
  • Function : Author
Andrei P. Lobanov
  • Function : Author
Colin Lonsdale
  • Function : Author
Jirong Mao
  • Function : Author
Nicola Marchili
  • Function : Author
Sera Markoff
  • Function : Author
Daniel P. Marrone
  • Function : Author
Alan P. Marscher
  • Function : Author
Satoki Matsushita
  • Function : Author
Lynn D. Matthews
  • Function : Author
Lia Medeiros
  • Function : Author
Karl M. Menten
  • Function : Author
Daniel Michalik
  • Function : Author
Izumi Mizuno
  • Function : Author
Yosuke Mizuno
  • Function : Author
James M. Moran
  • Function : Author
Cornelia Müller
  • Function : Author
Alejandro Mus
  • Function : Author
Gibwa Musoke
  • Function : Author
Ioannis Myserlis
  • Function : Author
Andrew Nadolski
  • Function : Author
Hiroshi Nagai
  • Function : Author
Neil M. Nagar
  • Function : Author
Masanori Nakamura
  • Function : Author
Ramesh Narayan
  • Function : Author
Gopal Narayanan
  • Function : Author
Iniyan Natarajan
  • Function : Author
Antonios Nathanail
  • Function : Author
Joey Neilsen
  • Function : Author
Roberto Neri
  • Function : Author
Chunchong Ni
  • Function : Author
Aristeidis Noutsos
  • Function : Author
Michael A. Nowak
  • Function : Author
Junghwan Oh
  • Function : Author
Hiroki Okino
  • Function : Author
Héctor Olivares
  • Function : Author
Gisela N. Ortiz-León
  • Function : Author
Tomoaki Oyama
  • Function : Author
Feryal Özel
  • Function : Author
Daniel C. M. Palumbo
  • Function : Author
Georgios Filippos Paraschos
  • Function : Author
Jongho Park
  • Function : Author
Harriet Parsons
  • Function : Author
Nimesh Patel
  • Function : Author
Ue-Li Pen
  • Function : Author
Vincent Piétu
  • Function : Author
Richard Plambeck
  • Function : Author
Aleksandar Popstefanija
  • Function : Author
Oliver Porth
  • Function : Author
Felix M. Pötzl
  • Function : Author
Ben Prather
  • Function : Author
Jorge A. Preciado-López
  • Function : Author
Dimitrios Psaltis
  • Function : Author
Hung-Yi Pu
  • Function : Author
Ramprasad Rao
  • Function : Author
Mark G. Rawlings
  • Function : Author
Alexander W. Raymond
  • Function : Author
Luciano Rezzolla
  • Function : Author
Angelo Ricarte
  • Function : Author
Bart Ripperda
  • Function : Author
Freek Roelofs
  • Function : Author
Alan Rogers
  • Function : Author
Eduardo Ros
  • Function : Author
Cristina Romero-Canizales
  • Function : Author
Arash Roshanineshat
  • Function : Author
Helge Rottmann
  • Function : Author
Alan L. Roy
  • Function : Author
Ignacio Ruiz
  • Function : Author
Chet Ruszczyk
  • Function : Author
Kazi L. J. Rygl
  • Function : Author
Salvador Sánchez
  • Function : Author
David Sánchez-Arguelles
  • Function : Author
Miguel Sanchez-Portal
  • Function : Author
Mahito Sasada
  • Function : Author
Kaushik Satapathy
  • Function : Author
Tuomas Savolainen
  • Function : Author
F. Peter Schloerb
  • Function : Author
Karl-Friedrich Schuster
  • Function : Author
Lijing Shao
  • Function : Author
Zhiqiang Shen
  • Function : Author
Des Small
  • Function : Author
Bong Won Sohn
  • Function : Author
Jason Soohoo
  • Function : Author
Kamal Souccar
  • Function : Author
He Sun
  • Function : Author
Fumie Tazaki
  • Function : Author
Alexandra J. Tetarenko
  • Function : Author
Paul Tiede
  • Function : Author
Remo P. J. Tilanus
  • Function : Author
Michael Titus
  • Function : Author
Pablo Torne
  • Function : Author
Tyler Trent
  • Function : Author
Sascha Trippe
  • Function : Author
Ilse van Bemmel
  • Function : Author
Huib Jan van Langevelde
  • Function : Author
Daniel R. van Rossum
  • Function : Author
Jesse Vos
  • Function : Author
Jan Wagner
  • Function : Author
Derek Ward-Thompson
  • Function : Author
John Wardle
  • Function : Author
Jonathan Weintroub
  • Function : Author
Norbert Wex
  • Function : Author
Robert Wharton
  • Function : Author
Kaj Wiik
  • Function : Author
Gunther Witzel
  • Function : Author
Michael Wondrak
  • Function : Author
George N. Wong
  • Function : Author
Qingwen Wu
  • Function : Author
Paul Yamaguchi
  • Function : Author
Doosoo Yoon
  • Function : Author
André Young
  • Function : Author
Ken Young
  • Function : Author
Ziri Younsi
  • Function : Author
Feng Yuan
  • Function : Author
Ye-Fei Yuan
  • Function : Author
J. Anton Zensus
  • Function : Author
Shuo Zhang
  • Function : Author
Shan-Shan Zhao
  • Function : Author

Abstract

The blazar J1924-2914 is a primary Event Horizon Telescope (EHT) calibrator for the Galactic center's black hole Sagittarius A*. Here we present the first total and linearly polarized intensity images of this source obtained with the unprecedented 20 μas resolution of the EHT. J1924-2914 is a very compact flat-spectrum radio source with strong optical variability and polarization. In April 2017 the source was observed quasi-simultaneously with the EHT (April 5-11), the Global Millimeter VLBI Array (April 3), and the Very Long Baseline Array (April 28), giving a novel view of the source at four observing frequencies, 230, 86, 8.7, and 2.3 GHz. These observations probe jet properties from the subparsec to 100 pc scales. We combine the multifrequency images of J1924-2914 to study the source morphology. We find that the jet exhibits a characteristic bending, with a gradual clockwise rotation of the jet projected position angle of about 90° between 2.3 and 230 GHz. Linearly polarized intensity images of J1924-2914 with the extremely fine resolution of the EHT provide evidence for ordered toroidal magnetic fields in the blazar compact core.
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Dates and versions

insu-03874903 , version 1 (28-11-2022)

Licence

Attribution - CC BY 4.0

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Sara Issaoun, Maciek Wielgus, Svetlana Jorstad, Thomas P. Krichbaum, Lindy Blackburn, et al.. Resolving the Inner Parsec of the Blazar J1924-2914 with the Event Horizon Telescope. The Astrophysical Journal, 2022, 934, ⟨10.3847/1538-4357/ac7a40⟩. ⟨insu-03874903⟩
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