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 L18

Ämneskategorier

Medicinsk laboratorie- och mätteknik

Astronomi, astrofysik och kosmologi

Multidisciplinär geovetenskap

DOI

10.3847/2041-8213/ac6615

Mer information

Senast uppdaterat

2023-09-15