Selective Dynamical Imaging of Interferometric Data

著者: Joseph Farah, Peter Galison, Kazunori Akiyama, Katherine L. Bouman, Geoffrey C. Bower, Andrew Chael, Antonio Fuentes, José L. Gómez, Mareki Honma, Michael D. Johnson, Yutaro Kofuji, Daniel P. Marrone, Kotaro Moriyama, Ramesh Narayan, Dominic W. Pesce, Paul Tiede, Maciek Wielgus, Guang-Yao Zhao, A. Alberdi, W. Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, B. A. Benson, Dan Bintley, Lindy Blackburn, R. Blundell, W. Boland, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, S. Britzen, Avery E. Broderick, Dominique Broguière, Thomas Bronzwaer, Sandra Bustamente, Do‐Young Byun, J. E. Carlstrom, Chi‐kwan Chan, Koushik Chatterjee, Shami Chatterjee, Ming‐Tang Chen, Xiaopeng Cheng, Ilje Cho, Pierre Christian, J. E. Conway, J. M. Cordes, T. M. Crawford, G. Crew, Alejandro Cruz-Osorio, Yuzhu Cui, Jordy Davelaar, Mariafelicia De Laurentis, Roger Deane, Jessica Dempsey, G. Desvignes, Sheperd S. Doeleman, Ralph P. Eatough, H. Falcke, Vincent L. Fish, Ed Fomalont, H. Alyson Ford, Raquel Fraga-Encinas, Per Friberg, Christian M. Fromm, Charles F. Gammie, Roberto Garc’a, Olivier Gentaz, C. Goddi, Roman Gold, Arturo I. Gómez-Ruiz, Minfeng Gu, Mark Gurwell, Kazuhiro Hada, Daryl Haggard, M. H. Hecht, Ronald Hesper, Luis C. Ho, Paul T. P. Ho, Chih-Wei L. Huang, Lei Huang, D. H. Hughes, Shiro Ikeda, Makoto Inoue, Sara Issaoun, D. J. James, Buell T. Jannuzi, Michaël Janssen, Britton Jeter, Wu Jiang, Alejandra Jiménez-Rosales, Svetlana G. Jorstad, Taehyun Jung, Mansour Karami, R. Karuppusamy, Tomohisa Kawashima, Garrett K. Keating, Mark Kettenis, Dong-Jin Kim, Jae-Young Kim, Jongsoo Kim, Junhan Kim, Motoki Kino, Jun Yi Koay, Patrick M. Koch, Shoko Koyama, C. Krämer, Michael Kramer, T. P. Krichbaum, Cheng‐Yu Kuo, Tod R. Lauer, Sang-Sung Lee, Aviad Levis, Yanrong Li, Zhiyuan 志 远 Li 李, Rocco Lico, Greg Lindahl, M. Lindqvist, Jun 俊 Liu 刘, Kuo Liu, Elisabetta Liuzzo, Wen-Ping Lo, A. P. Lobanov, Laurent Loinard, C. J. Lonsdale, Ru-Sen Lu, Nicholas R. MacDonald, Jirong 基 荣 Mao 毛, N. Marchili, Sera Markoff, Alan P. Marscher, I. Martí‐Vidal, Satoki Matsushita, Lynn D. Matthews, Lia Medeiros, K. M. Menten, Izumi Mizuno, Yosuke Mizuno, J. M. Moran, Monika Mościbrodzka, Cornelia Müller, Alejandro Mus, Gibwa Musoke, Hiroshi Nagai, Neil M. Nagar, Masanori Nakamura, Gopal Narayanan, Iniyan Natarajan, Antonios Nathanail, Joey Neilsen, R. Neri, Chunchong Ni, A. Noutsos, Michael A. Nowak, Hiroki Okino, Héctor Olivares, Gisela N. Ortiz-León, Tomoaki Oyama, Feryal ��zel, Daniel C. M. Palumbo, Jongho Park, Nimesh Patel, Ue‐Li Pen, Vincent Piétu, R. L. Plambeck, Aleksandar PopStefanija, Oliver Porth, Felix M. Pötzl, Ben Prather, Jorge A. Preciado-López, Dimitrios Psaltis, Hung-Yi Pu, Venkatessh Ramakrishnan, Ramprasad Rao, Mark G. Rawlings, Alexander W. Raymond, Luciano Rezzolla, Bart Ripperda, Freek Roelofs, A. E. E. Rogers, E. Ros, Mel Rose, Arash Roshanineshat, Helge Rottmann, A. L. Roy, Chet Ruszczyk, K. L. J. Rygl, Salvador Sánchez, David Sánchez-Argüelles, Mahito Sasada, T. Savolainen, F. Peter Schloerb, K. Schüster, Lijing Shao, Zhi-Qiang Shen, Des Small, Bong Won Sohn, Jason Soohoo, He Sun, Fumie Tazaki, Alexandra J. Tetarenko, R. P. J. Tilanus, Michael S. Titus, Kenji Toma, Pablo Torné, Efthalia Traianou, Tyler Trent, Sascha Trippe, Ilse van Bemmel, Huib Jan van Langevelde, Daniel R. van Rossum, Jan Wagner, D. Ward–Thompson, J. F. C. Wardle, Jonathan Weintroub, Norbert Wex, Robert Wharton, K. Wiik, George N. Wong, Qingwen Wu, Doosoo Yoon, André Young, Ken Young, Ziri Younsi, Feng 峰 Yuan 袁, Ye-Fei 业 飞 Yuan 袁, J. A. Zensus, Shan-Shan Zhao - The Astrophysical Journal Letters 2022 被引用: 31

Abstract 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.