Selective Dynamical Imaging of Interferometric Data
Artikel i vetenskaplig tidskrift, 2022
Recent developments in very long baseline interferometry (VLBI) have made it possible for the Event Horizon Telescope (EHT) to resolve the innermost accretion flows of the largest supermassive black holes on the sky. The sparse nature of the EHT's (u, v)-coverage presents a challenge when attempting to resolve highly time-variable sources. We demonstrate that the changing (u, v)-coverage of the EHT can contain regions of time over the course of a single observation that facilitate dynamical imaging. These optimal time regions typically have projected baseline distributions that are approximately angularly isotropic and radially homogeneous. We derive a metric of coverage quality based on baseline isotropy and density that is capable of ranking array configurations by their ability to produce accurate dynamical reconstructions. We compare this metric to existing metrics in the literature and investigate their utility by performing dynamical reconstructions on synthetic data from simulated EHT observations of sources with simple orbital variability. We then use these results to make recommendations for imaging the 2017 EHT Sgr A* data set.
Författare
Joseph Farah
University of California at Santa Barbara
Las Cumbres Observatory Global Telescope Network
Peter Galison
Harvard University
Kazunori Akiyama
Massachusetts Institute of Technology (MIT)
Harvard University
National Astronomical Observatory of Japan
Katherine L. Bouman
Harvard University
California Institute of Technology (Caltech)
Harvard-Smithsonian Center for Astrophysics
Geoffrey C. Bower
Academia Sinica
Andrew Chael
Princeton University
NASA Hubble Fellowship Program
Antonio Fuentes
Consejo Superior de Investigaciones Científicas (CSIC)
Jose L. Gomez
Instituto de Astrofisica de Andalucía (IAA)
Mareki Honma
National Astronomical Observatory of Japan
University of Tokyo
The Graduate University for Advanced Studies (SOKENDAI)
Michael D. Johnson
Harvard-Smithsonian Center for Astrophysics
Harvard University
Yutaro Kofuji
University of Tokyo
National Astronomical Observatory of Japan
Daniel P. Marrone
University of Arizona
Kotaro Moriyama
Massachusetts Institute of Technology (MIT)
National Astronomical Observatory of Japan
Ramesh Narayan
Harvard University
Harvard-Smithsonian Center for Astrophysics
Dominic W. Pesce
Harvard University
Harvard-Smithsonian Center for Astrophysics
Paul Tiede
University of Waterloo
Maciek Wielgus
Max-Planck-Gesellschaft
Guang-Yao Zhao
Consejo Superior de Investigaciones Científicas (CSIC)
Antxon Alberdi
Consejo Superior de Investigaciones Científicas (CSIC)
Walter Alef
Max-Planck-Gesellschaft
Juan Carlos Algaba
University of Malaya
Richard Anantua
Harvard University
Harvard-Smithsonian Center for Astrophysics
Keiichi Asada
Academia Sinica
Rebecca Azulay
Max-Planck-Gesellschaft
Universitat de Valencia
Anne-Kathrin Baczkovic
Max-Planck-Gesellschaft
David Ball
University of Arizona
Mislay Balokovic
Harvard University
Harvard-Smithsonian Center for Astrophysics
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)
Hope Boyce
McGill University
Michael Bremer
Institut de Radioastronomie Millimétrique (IRAM)
Christiaan D. Brinkerink
Radboud Universiteit
Roger Brissenden
Harvard University
Harvard-Smithsonian Center for Astrophysics
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
Korea Astronomy and Space Science Institute
University of Science and Technology (UST)
John E. Carlstrom
University of Chicago
Chi-kwan Chan
University of Arizona
Koushik Chatterjee
Universiteit Van Amsterdam
Shami Chatterjee
Cornell University
Ming-Tang Chen
Academia Sinica
Yongjun Chen
Chinese Academy of Sciences
Ilje Cho
Instituto de Astrofisica de Andalucía (IAA)
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
National Astronomical Observatory of Japan
The Graduate University for Advanced Studies (SOKENDAI)
Jordy Davelaar
Flatiron Institute
Columbia University
Radboud Universiteit
Mariafelicia De Laurentis
Universita degli Studi di Napoli Federico II
Istituto Nazionale di Fisica Nucleare
Johann Wolfgang Goethe Universität Frankfurt am Main
Roger Deane
Rhodes University
University of Witwatersrand
Universiteit van Pretoria
Jessica Dempsey
East Asian Observatory
Gregory Desvignes
Université Paris Descartes
Sheperd S. Doeleman
Harvard University
Harvard-Smithsonian Center for Astrophysics
Ralph P. Eatough
Chinese Academy of Sciences
Max-Planck-Gesellschaft
Heino Falcke
Radboud Universiteit
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
Johann Wolfgang Goethe Universität Frankfurt am Main
Harvard University
Charles F. Gammie
University of Illinois
Roberto Garc'a
Institut de Radioastronomie Millimétrique (IRAM)
Olivier Gentaz
Institut de Radioastronomie Millimétrique (IRAM)
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
Minfeng Gu
Chinese Academy of Sciences
Mark Gurwell
Harvard-Smithsonian Center for Astrophysics
Kazuhiro Hada
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
Daryl Haggard
McGill University
Michael H. Hecht
Massachusetts Institute of Technology (MIT)
Ronald Hesper
Rijksuniversiteit Groningen
Luis C. Ho
Beijing University of Technology
Paul Ho
Academia Sinica
Chih-Wei L. Huang
Academia Sinica
Lei Huang
Chinese Academy of Sciences
David H. Hughes
Instituto Nacional de Astrofísica, Óptica y Electrońica
Shiro Ikeda
The Institute of Statistical Mathematics
National Astronomical Observatory of Japan
University of Tokyo
The Graduate University for Advanced Studies (SOKENDAI)
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
Svetlana Jorstad
Boston University
Taehyun Jung
University of Science and Technology (UST)
Korea Astronomy and Space Science Institute
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
Max-Planck-Gesellschaft
Korea Astronomy and Space Science Institute
Jongsoo Kim
Korea Astronomy and Space Science Institute
Junhan Kim
California Institute of Technology (Caltech)
University of Arizona
Motoki Kino
Kogakuin University of Technology and Engineering
National Astronomical Observatory of Japan
Jun Yi Koay
Academia Sinica
Patrick M. Koch
Academia Sinica
Shoko Koyama
Academia Sinica
Carsten Kramer
Institut de Radioastronomie Millimétrique (IRAM)
Michael Kramer
Max-Planck-Gesellschaft
Thomas P. Krichbaum
Max-Planck-Gesellschaft
Cheng-Yu Kuo
National Sun Yat-Sen University
Academia Sinica
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
Rocco Lico
Max-Planck-Gesellschaft
Istituto nazionale di astrofisica (INAF)
Consejo Superior de Investigaciones Científicas (CSIC)
Greg Lindahl
Harvard-Smithsonian Center for Astrophysics
Michael Lindqvist
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Jun Liu
Max-Planck-Gesellschaft
Kuo Liu
Max-Planck-Gesellschaft
Elisabetta Liuzzo
Istituto nazionale di astrofisica (INAF)
Wen-Ping Lo
Academia Sinica
National Taiwan University
Andrei P. Lobanov
Max-Planck-Gesellschaft
Laurent Loinard
Universidad Nacional Autónoma de México
Colin Lonsdale
Massachusetts Institute of Technology (MIT)
Ru-Sen Lu
Max-Planck-Gesellschaft
Chinese Academy of Sciences
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
Alan P. Marscher
Boston University
Ivan Marti-Vidal
Universitat de Valencia
Satoki Matsushita
Academia Sinica
Lynn D. Matthews
Massachusetts Institute of Technology (MIT)
Lia Medeiros
University of Arizona
Institute for Advanced Study
Karl M. Menten
Max-Planck-Gesellschaft
Izumi Mizuno
East Asian Observatory
Yosuke Mizuno
Johann Wolfgang Goethe Universität Frankfurt am Main
Shanghai Jiao Tong University
James M. Moran
Harvard University
Harvard-Smithsonian Center for Astrophysics
Monika Moscibrodzka
Radboud Universiteit
Cornelia Muller
Max-Planck-Gesellschaft
Radboud Universiteit
Alejandro Mus Mejas
Universitat de Valencia
Gibwa Musoke
Radboud Universiteit
Universiteit Van Amsterdam
Hiroshi Nagai
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
Neil M. Nagar
Universidad de Concepción
Masanori Nakamura
National Institute of Technology, Hachinohe College
Academia Sinica
Gopal Narayanan
University of Massachusetts
Iniyan Natarajan
University of Witwatersrand
Rhodes University
South African Radio Astronomy Observatory (SARAO)
Antonios Nathanail
Johann Wolfgang Goethe Universität Frankfurt am Main
Joey Neilsen
Villanova University
Roberto Neri
Institut de Radioastronomie Millimétrique (IRAM)
Chunchong Ni
University of Waterloo
Aristeidis Noutsos
Max-Planck-Gesellschaft
Michael A. Nowak
Washington University in St. Louis
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
Feryal Zel
University of Arizona
Daniel C. M. Palumbo
Harvard-Smithsonian Center for Astrophysics
Harvard University
Jongho Park
Academia Sinica
Nimesh Patel
Harvard-Smithsonian Center for Astrophysics
Ue-Li Pen
Canadian Institute for Advanced Research
University of Toronto
Perimeter Institute for Theoretical Physics
Vincent Pietu
Institut de Radioastronomie Millimétrique (IRAM)
Richard Plambeck
University of California at Berkeley
Aleksandar PopStefanija
University of Massachusetts
Oliver Porth
Universiteit Van Amsterdam
Johann Wolfgang Goethe Universität Frankfurt am Main
Felix M. Potzl
Max-Planck-Gesellschaft
Ben Prather
University of Illinois
Jorge A. Preciado-Lopez
Perimeter Institute for Theoretical Physics
Dimitrios Psaltis
University of Arizona
Hung-Yi Pu
Perimeter Institute for Theoretical Physics
Academia Sinica
National Taiwan Normal University
Venkatessh Ramakrishnan
Universidad de Concepción
Ramprasad Rao
Academia Sinica
Mark G. Rawlings
East Asian Observatory
Alexander W. Raymond
Harvard-Smithsonian Center for Astrophysics
Harvard University
Luciano Rezzolla
Frankfurt Institute for Advanced Studies
Trinity College Dublin
Johann Wolfgang Goethe Universität Frankfurt am Main
Bart Ripperda
Princeton University
Flatiron Institute
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
Consejo Nacional de Ciencia y Tecnologia Mexico
Instituto Nacional de Astrofísica, Óptica y Electrońica
Mahito Sasada
Hiroshima University
National Astronomical Observatory of Japan
Tuomas Savolainen
Aalto-Yliopisto
Max-Planck-Gesellschaft
F. Peter Schloerb
University of Massachusetts
Karl-Friedrich Schuster
Institut de Radioastronomie Millimétrique (IRAM)
Lijing Shao
Max-Planck-Gesellschaft
Beijing University of Technology
Zhiqiang Shen
Chinese Academy of Sciences
Des Small
Joint Institute for VLBI in Europe (JIVE)
Bong Won Sohn
Yonsei University
Korea Astronomy and Space Science Institute
University of Science and Technology (UST)
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
Remo P. J. Tilanus
Universiteit Leiden
University of Arizona
Radboud Universiteit
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
Michael Titus
Massachusetts Institute of Technology (MIT)
Kenji Toma
Tohoku University
Pablo Torne
Instituto de Radioastronomía Milimétrica
Max-Planck-Gesellschaft
Efthalia Traianou
Instituto de Astrofisica de Andalucía (IAA)
Max-Planck-Gesellschaft
Tyler Trent
University of Arizona
Sascha Trippe
Seoul National University
Ilse van Bemmel
Joint Institute for VLBI in Europe (JIVE)
Huib Jan van Langevelde
Universiteit Leiden
Joint Institute for VLBI in Europe (JIVE)
Daniel R. van Rossum
Radboud Universiteit
Jan Wagner
Max-Planck-Gesellschaft
Derek Ward-Thompson
University of Central Lancashire
John Wardle
Brandeis University
Jonathan Weintroub
Harvard University
Harvard-Smithsonian Center for Astrophysics
Norbert Wex
Max-Planck-Gesellschaft
Robert Wharton
Max-Planck-Gesellschaft
Kaj Wiik
Turun Yliopisto
George N. Wong
University of Illinois
Qingwen Wu
Huazhong University of Science and Technology
Doosoo Yoon
Universiteit Van Amsterdam
Andre Young
Radboud Universiteit
Ken Young
Harvard-Smithsonian Center for Astrophysics
Ziri Younsi
University College London (UCL)
Johann Wolfgang Goethe Universität Frankfurt am Main
Feng Yuan
Chinese Academy of Sciences
Ye-Fei Yuan
University of Science and Technology of China
J. Anton Zensus
Max-Planck-Gesellschaft
Shan-Shan Zhao
Chinese Academy of Sciences
Astrophysical Journal Letters
2041-8205 (ISSN) 2041-8213 (eISSN)
Vol. 930 2 L18Ämneskategorier
Medicinsk laboratorie- och mätteknik
Astronomi, astrofysik och kosmologi
Multidisciplinär geovetenskap
DOI
10.3847/2041-8213/ac6615