The Variability of the Black Hole Image in M87 at the Dynamical Timescale
Artikel i vetenskaplig tidskrift, 2022
The black hole images obtained with the Event Horizon Telescope (EHT) are expected to be variable at the dynamical timescale near their horizons. For the black hole at the center of the M87 galaxy, this timescale (5-61 days) is comparable to the 6 day extent of the 2017 EHT observations. Closure phases along baseline triangles are robust interferometric observables that are sensitive to the expected structural changes of the images but are free of station-based atmospheric and instrumental errors. We explored the day-to-day variability in closure-phase measurements on all six linearly independent nontrivial baseline triangles that can be formed from the 2017 observations. We showed that three triangles exhibit very low day-to-day variability, with a dispersion of similar to 3 degrees-5 degrees. The only triangles that exhibit substantially higher variability (similar to 90 degrees-180 degrees) are the ones with baselines that cross the visibility amplitude minima on the u-v plane, as expected from theoretical modeling. We used two sets of general relativistic magnetohydrodynamic simulations to explore the dependence of the predicted variability on various black hole and accretion-flow parameters. We found that changing the magnetic field configuration, electron temperature model, or black hole spin has a marginal effect on the model consistency with the observed level of variability. On the other hand, the most discriminating image characteristic of models is the fractional width of the bright ring of emission. Models that best reproduce the observed small level of variability are characterized by thin ring-like images with structures dominated by gravitational lensing effects and thus least affected by turbulence in the accreting plasmas.
Författare
Kaushik Satapathy
University of Arizona
Dimitrios Psaltis
University of Arizona
Feryal Ozel
University of Arizona
Lia Medeiros
Institute for Advanced Study
Chinese Academy of Sciences
Sean T. Dougall
University of Arizona
Chi-Kwan Chan
University of Arizona
Maciek Wielgus
Harvard-Smithsonian Center for Astrophysics
Harvard University
Ben S. Prather
University of Illinois
George N. Wong
University of Illinois
Charles F. Gammie
University of Illinois
Kazunori Akiyama
Massachusetts Institute of Technology (MIT)
Harvard University
National Astronomical Observatory of Japan
Antxon Alberdi
Consejo Superior de Investigaciones Científicas (CSIC)
Walter Alef
Max-Planck-Gesellschaft
Juan Carlos Algaba
University of Malaya
Richard Anantua
Harvard-Smithsonian Center for Astrophysics
Harvard University
Keiichi Asada
Academia Sinica
Rebecca Azulay
Universitat de Valencia
Max-Planck-Gesellschaft
Anne-Kathrin Baczko
Max-Planck-Gesellschaft
David Ball
University of Arizona
Mislay Balokovic
Harvard-Smithsonian Center for Astrophysics
Harvard University
John Barrett
Massachusetts Institute of Technology (MIT)
Bradford A. Benson
Fermi National Accelerator Laboratory
University of Chicago
Dan Bintley
East Asian Observatory
Lindy Blackburn
Harvard-Smithsonian Center for Astrophysics
Harvard University
Raymond Blundell
Harvard-Smithsonian Center for Astrophysics
Wilfred Boland
Nederlandse Onderzoekschool voor Astronomie (NOVA)
Katherine L. Bouman
Harvard University
California Institute of Technology (Caltech)
Harvard-Smithsonian Center for Astrophysics
Geoffrey C. Bower
Academia Sinica
Hope Boyce
McGill University
Michael Bremer
Institut de Radioastronomie Millimétrique (IRAM)
Christiaan D. Brinkerink
Radboud Universiteit
Roger Brissenden
Harvard-Smithsonian Center for Astrophysics
Harvard University
Silke Britzen
Max-Planck-Gesellschaft
Avery E. Broderick
University of Waterloo
Perimeter Institute for Theoretical Physics
Dominique Broguiere
Institut de Radioastronomie Millimétrique (IRAM)
Thomas Bronzwaer
Radboud Universiteit
Sandra Bustamente
University of Massachusetts
Do-Young Byun
University of Science and Technology (UST)
Korea Astronomy and Space Science Institute
John E. Carlstrom
University of Chicago
Andrew Chael
Princeton University
University of Science and Technology of China
Koushik Chatterjee
Universiteit Van Amsterdam
Shami Chatterjee
Cornell University
Ming-Tang Chen
Academia Sinica
Yongjun Chen
Chinese Academy of Sciences
Ilje Cho
University of Science and Technology (UST)
Korea Astronomy and Space Science Institute
Pierre Christian
Fairfield University
John Conway
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
James M. Cordes
Cornell University
Thomas M. Crawford
University of Chicago
Geoffrey B. Crew
Massachusetts Institute of Technology (MIT)
Alejandro Cruz-Osorio
Johann Wolfgang Goethe Universität Frankfurt am Main
Yuzhu Cui
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
Jordy Davelaar
Columbia University
Radboud Universiteit
Flatiron Institute
Mariafelicia De Laurentis
Johann Wolfgang Goethe Universität Frankfurt am Main
Universita degli Studi di Napoli Federico II
Istituto Nazionale di Fisica Nucleare
Roger Deane
University of Witwatersrand
Rhodes University
Universiteit van Pretoria
Jessica Dempsey
East Asian Observatory
Gregory Desvignes
Université de recherche Paris Sciences et Lettres
Jason Dexter
University of Colorado at Boulder
Sheperd S. Doeleman
Harvard-Smithsonian Center for Astrophysics
Harvard University
Ralph P. Eatough
Max-Planck-Gesellschaft
Chinese Academy of Sciences
Heino Falcke
Radboud Universiteit
Joseph Farah
University of Massachusetts Boston
Harvard-Smithsonian Center for Astrophysics
Harvard University
Vincent L. Fish
Massachusetts Institute of Technology (MIT)
Ed Fomalont
National Radio Astronomy Observatory
H. Alyson Ford
University of Arizona
Raquel Fraga-Encinas
Radboud Universiteit
Per Friberg
East Asian Observatory
Christian M. Fromm
Harvard-Smithsonian Center for Astrophysics
Harvard University
Johann Wolfgang Goethe Universität Frankfurt am Main
Antonio Fuentes
Consejo Superior de Investigaciones Científicas (CSIC)
Peter Galison
Harvard University
Roberto Garcia
Institut de Radioastronomie Millimétrique (IRAM)
Olivier Gentaz
Institut de Radioastronomie Millimétrique (IRAM)
Boris Georgiev
University of Waterloo
Ciriaco Goddi
Istituto nazionale di astrofisica (INAF)
Radboud Universiteit
Roman Gold
Perimeter Institute for Theoretical Physics
Syddansk Universitet
Gomez-Ruiz
Consejo Nacional de Ciencia y Tecnologia Mexico
Instituto Nacional de Astrofísica, Óptica y Electrońica
Jose L. Gomez
Instituto de Astrofisica de Andalucía (IAA)
Minfeng Gu
Chinese Academy of Sciences
Mark Gurwell
Harvard-Smithsonian Center for Astrophysics
Kazuhiro Hada
National Astronomical Observatory of Japan
The Graduate University for Advanced Studies (SOKENDAI)
Daryl Haggard
McGill University
Michael H. Hecht
Massachusetts Institute of Technology (MIT)
Ronald Hesper
Rijksuniversiteit Groningen
Paul Ho
Academia Sinica
Mareki Honma
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
University of Tokyo
Chih-Wei L. Huang
Academia Sinica
Lei Huang
Chinese Academy of Sciences
David H. Hughes
Instituto Nacional de Astrofísica, Óptica y Electrońica
Shiro Ikeda
University of Tokyo
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
The Institute of Statistical Mathematics
Makoto Inoue
Academia Sinica
Sara Issaoun
Radboud Universiteit
David J. James
Harvard-Smithsonian Center for Astrophysics
Harvard University
Buell T. Jannuzi
University of Arizona
Michael Janssen
Max-Planck-Gesellschaft
Britton Jeter
University of Waterloo
Wu Jiang
Chinese Academy of Sciences
Alejandra Jimenez-Rosales
Radboud Universiteit
Michael D. Johnson
Harvard University
Harvard-Smithsonian Center for Astrophysics
Svetlana Jorstad
Boston University
Saint Petersburg State University - Spsu
Taehyun Jung
Korea Astronomy and Space Science Institute
University of Science and Technology (UST)
Mansour Karami
University of Waterloo
Perimeter Institute for Theoretical Physics
Ramesh Karuppusamy
Max-Planck-Gesellschaft
Tomohisa Kawashima
University of Tokyo
Garrett K. Keating
Harvard-Smithsonian Center for Astrophysics
Mark Kettenis
Joint Institute for VLBI in Europe (JIVE)
Dong-Jin Kim
Max-Planck-Gesellschaft
Jae-Young Kim
Korea Astronomy and Space Science Institute
Max-Planck-Gesellschaft
Jongsoo Kim
Korea Astronomy and Space Science Institute
Junhan Kim
University of Arizona
California Institute of Technology (Caltech)
Motoki Kino
Kogakuin University of Technology and Engineering
National Astronomical Observatory of Japan
Jun Yi Koay
Academia Sinica
Yutaro Kofuji
National Astronomical Observatory of Japan
University of Tokyo
Patrick M. Koch
Academia Sinica
Shoko Koyama
Academia Sinica
Niigata University
Carsten Kramer
Institut de Radioastronomie Millimétrique (IRAM)
Michael Kramer
Max-Planck-Gesellschaft
Thomas P. Krichbaum
Max-Planck-Gesellschaft
Cheng-Yu Kuo
Academia Sinica
National Sun Yat-Sen University
Tod R. Lauer
National Optical Astronomy Observatory
Sang-Sung Lee
Korea Astronomy and Space Science Institute
Aviad Levis
California Institute of Technology (Caltech)
Yan-Rong Li
Chinese Academy of Sciences
Zhiyuan Li
Nanjing University
Michael Lindqvist
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Rocco Lico
Consejo Superior de Investigaciones Científicas (CSIC)
Max-Planck-Gesellschaft
Greg Lindahl
Harvard-Smithsonian Center for Astrophysics
Jun Liu
Max-Planck-Gesellschaft
Kuo Liu
Max-Planck-Gesellschaft
Elisabetta Liuzzo
Istituto nazionale di astrofisica (INAF)
Wen-Ping Lo
National Taiwan University
Academia Sinica
Andrei P. Lobanov
Max-Planck-Gesellschaft
Laurent Loinard
Universidad Nacional Autónoma de México
Colin Lonsdale
Massachusetts Institute of Technology (MIT)
Ru-Sen Lu
Chinese Academy of Sciences
Max-Planck-Gesellschaft
Nicholas R. MacDonald
Max-Planck-Gesellschaft
Jirong Mao
Chinese Academy of Sciences
Nicola Marchili
Max-Planck-Gesellschaft
Istituto nazionale di astrofisica (INAF)
Sera Markoff
Universiteit Van Amsterdam
Chinese Academy of Sciences
Daniel P. Marrone
University of Arizona
Alan P. Marscher
Boston University
Ivan Marti-Vidal
Universitat de Valencia
Satoki Matsushita
Academia Sinica
Lynn D. Matthews
Massachusetts Institute of Technology (MIT)
Karl M. Menten
Max-Planck-Gesellschaft
Izumi Mizuno
East Asian Observatory
Yosuke Mizuno
Johann Wolfgang Goethe Universität Frankfurt am Main
Chinese Academy of Sciences
James M. Moran
Harvard University
Harvard-Smithsonian Center for Astrophysics
Kotaro Moriyama
Massachusetts Institute of Technology (MIT)
National Astronomical Observatory of Japan
Monika Moscibrodzka
Radboud Universiteit
Cornelia Mueller
Radboud Universiteit
Max-Planck-Gesellschaft
Alejandro Mus Mejias
Universitat de Valencia
Gibwa Musoke
Universiteit Van Amsterdam
Radboud Universiteit
Hiroshi Nagai
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
Neil M. Nagar
Universiteit Van Amsterdam
Masanori Nakamura
Academia Sinica
Shanghai Jiao Tong University
Ramesh Narayan
Harvard-Smithsonian Center for Astrophysics
Harvard University
Gopal Narayanan
University of Massachusetts
Iniyan Natarajan
University of Witwatersrand
Universidad de Concepción
Rhodes University
Antonios Nathanail
Johann Wolfgang Goethe Universität Frankfurt am Main
Joey Neilsen
National Institute of Technology, Hachinohe College
Roberto Neri
Institut de Radioastronomie Millimétrique (IRAM)
Chunchong Ni
University of Waterloo
Aristeidis Noutsos
Max-Planck-Gesellschaft
Michael A. Nowak
South African Radio Astronomy Observatory (SARAO)
Hiroki Okino
National Astronomical Observatory of Japan
University of Tokyo
Hector Olivares
Radboud Universiteit
Gisela N. Ortiz-Leon
Max-Planck-Gesellschaft
Tomoaki Oyama
National Astronomical Observatory of Japan
Daniel C. M. Palumbo
Harvard University
Harvard-Smithsonian Center for Astrophysics
Jongho Park
Academia Sinica
Nimesh Patel
Harvard-Smithsonian Center for Astrophysics
Ue-Li Pen
Villanova University
University of Toronto
Washington University in St. Louis
Perimeter Institute for Theoretical Physics
Dominic W. Pesce
Harvard University
Harvard-Smithsonian Center for Astrophysics
Vincent Pietu
Institut de Radioastronomie Millimétrique (IRAM)
Richard Plambeck
University of Toronto
Aleksandar PopStefanija
University of Massachusetts
Oliver Porth
Johann Wolfgang Goethe Universität Frankfurt am Main
Universiteit Van Amsterdam
Felix M. Potzl
Max-Planck-Gesellschaft
Jorge A. Preciado-Lopez
Perimeter Institute for Theoretical Physics
Hung-Yi Pu
Canadian Institute for Advanced Research
Perimeter Institute for Theoretical Physics
Academia Sinica
Venkatessh Ramakrishnan
Universiteit Van Amsterdam
Ramprasad Rao
Academia Sinica
Mark G. Rawlings
East Asian Observatory
Alexander W. Raymond
Harvard University
Harvard-Smithsonian Center for Astrophysics
Luciano Rezzolla
Johann Wolfgang Goethe Universität Frankfurt am Main
University of California at Berkeley
National Taiwan Normal University
Bart Ripperda
Flatiron Institute
Frankfurt Institute for Advanced Studies
Freek Roelofs
Radboud Universiteit
Harvard-Smithsonian Center for Astrophysics
Alan Rogers
Massachusetts Institute of Technology (MIT)
Eduardo Ros
Max-Planck-Gesellschaft
Mel Rose
University of Arizona
Arash Roshanineshat
University of Arizona
Helge Rottmann
Max-Planck-Gesellschaft
Alan L. Roy
Max-Planck-Gesellschaft
Chet Ruszczyk
Massachusetts Institute of Technology (MIT)
Kazi L. J. Rygl
Istituto nazionale di astrofisica (INAF)
Salvador Sanchez
Trinity College Dublin
David Sanchez-Arguelles
Instituto Nacional de Astrofísica, Óptica y Electrońica
Princeton University
Mahito Sasada
National Astronomical Observatory of Japan
Institut de Radioastronomie Millimétrique (IRAM)
Tuomas Savolainen
Hiroshima University
Consejo Nacional de Ciencia y Tecnologia Mexico
Max-Planck-Gesellschaft
F. Peter Schloerb
University of Massachusetts
Karl-Friedrich Schuster
Institut de Radioastronomie Millimétrique (IRAM)
Lijing Shao
Beijing University of Technology
Max-Planck-Gesellschaft
Zhiqiang Shen
Chinese Academy of Sciences
Des Small
Joint Institute for VLBI in Europe (JIVE)
Bong Won Sohn
University of Science and Technology (UST)
Korea Astronomy and Space Science Institute
Aalto-Yliopisto
Jason SooHoo
Massachusetts Institute of Technology (MIT)
He Sun
California Institute of Technology (Caltech)
Fumie Tazaki
National Astronomical Observatory of Japan
Alexandra J. Tetarenko
East Asian Observatory
Paul Tiede
University of Waterloo
Remo P. J. Tilanus
Yonsei University
University of Arizona
Radboud Universiteit
Aalto-Yliopisto
Michael Titus
Massachusetts Institute of Technology (MIT)
Kenji Toma
Universiteit Leiden
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
Pablo Torne
Max-Planck-Gesellschaft
Trinity College Dublin
Efthalia Traianou
Max-Planck-Gesellschaft
Tyler Trent
University of Arizona
Sascha Trippe
Tohoku University
Ilse van Bemmel
Joint Institute for VLBI in Europe (JIVE)
Huib Jan van Langevelde
Joint Institute for VLBI in Europe (JIVE)
Tohoku University
Daniel R. van Rossum
Radboud Universiteit
Jan Wagner
Max-Planck-Gesellschaft
Derek Ward-Thompson
Seoul National University
John Wardle
Universiteit Leiden
Jonathan Weintroub
Harvard-Smithsonian Center for Astrophysics
Harvard University
Norbert Wex
Max-Planck-Gesellschaft
Robert Wharton
Max-Planck-Gesellschaft
Kaj Wiik
University of Central Lancashire
Qingwen Wu
Brandeis University
Doosoo Yoon
Universiteit Van Amsterdam
Andre Young
Radboud Universiteit
Ken Young
Harvard-Smithsonian Center for Astrophysics
Ziri Younsi
Johann Wolfgang Goethe Universität Frankfurt am Main
Turun Yliopisto
Feng Yuan
Huazhong University of Science and Technology
Chinese Academy of Sciences
Ye-Fei Yuan
University College London (UCL)
J. Anton Zensus
Max-Planck-Gesellschaft
Guang-Yao Zhao
Consejo Superior de Investigaciones Científicas (CSIC)
Shan-Shan Zhao
Chinese Academy of Sciences
Astrophysical Journal
0004-637X (ISSN) 1538-4357 (eISSN)
Vol. 925 1 13Ämneskategorier
Meteorologi och atmosfärforskning
Astronomi, astrofysik och kosmologi
Den kondenserade materiens fysik
DOI
10.3847/1538-4357/ac332e