Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The Event Horizon Telescope Image of the Quasar NRAO 530
Astrophysical Journal, Volume 943, No. 2, Article 170, Year 2023
Notification
URL copied to clipboard!
Description
We report on the observations of the quasar NRAO 530 with the Event Horizon Telescope (EHT) on 2017 April 5−7, when NRAO 530 was used as a calibrator for the EHT observations of Sagittarius A*. At z = 0.902, this is the most distant object imaged by the EHT so far. We reconstruct the first images of the source at 230 GHz, at an unprecedented angular resolution of ∼20 μas, both in total intensity and in linear polarization (LP). We do not detect source variability, allowing us to represent the whole data set with static images. The images reveal a bright feature located on the southern end of the jet, which we associate with the core. The feature is linearly polarized, with a fractional polarization of ∼5%-8%, and it has a substructure consisting of two components. Their observed brightness temperature suggests that the energy density of the jet is dominated by the magnetic field. The jet extends over 60 μas along a position angle ∼ −28°. It includes two features with orthogonal directions of polarization (electric vector position angle), parallel and perpendicular to the jet axis, consistent with a helical structure of the magnetic field in the jet. The outermost feature has a particularly high degree of LP, suggestive of a nearly uniform magnetic field. Future EHT observations will probe the variability of the jet structure on microarcsecond scales, while simultaneous multiwavelength monitoring will provide insight into the high-energy emission origin. © 2023. The Author(s). Published by the American Astronomical Society.
Authors & Co-Authors
Jorstad, Svetlana G.
United States, Boston
Boston University
Wielgus, MacIek Iej
Germany, Bonn
Max Planck Institute for Radio Astronomy
Lico, Rocco
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Italy, Bologna
Istituto Di Radioastronomia, Bologna
Issaoun, Sara
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Broderick, Avery E.
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Canada, Waterloo
University of Waterloo
Pesce, Dominic W.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Liu, Jun
Germany, Bonn
Max Planck Institute for Radio Astronomy
Zhao, Guangyao
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Krichbaum, Thomas P.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Blackburn, Lindy L.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Chan, Chikwan
United States, Tucson
The University of Arizona
Janssen, Michael
Germany, Bonn
Max Planck Institute for Radio Astronomy
Ramakrishnan, Venkatessh
Chile, Biobio
Universidad de Concepcion
Finland, Turku
Turun Yliopisto
Finland, Espoo
Aalto University
Akiyama, Kazunori
United States, Cambridge
Harvard University
United States, Westford
Mit Haystack Observatory
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Alberdi, A.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Algaba, Juan Carlos
Malaysia, Kuala Lumpur
Universiti Malaya
Bouman, Katherine L.
United States, Pasadena
California Institute of Technology
Cho, Ilje
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Fuentes, Antonio
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Gómez, Jose L.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Gurwell, Mark A.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Johnson, Michael D.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Kim, Jae-young
Germany, Bonn
Max Planck Institute for Radio Astronomy
South Korea, Daegu
Kyungpook National University
Lu, Rusen
Germany, Bonn
Max Planck Institute for Radio Astronomy
China, Beijing
Chinese Academy of Sciences
Marti-Vidal, Ivan
Spain, Valencia
Universitat de València
Mos̈cibrodzka, Monika A.
Netherlands, Nijmegen
Radboud Universiteit
Traianou, Efthalia
Germany, Bonn
Max Planck Institute for Radio Astronomy
Spain, Madrid
Consejo Superior de Investigaciones Científicas
van Bemmel, Ilse M.
Unknown Affiliation
Alef, Walter
Germany, Bonn
Max Planck Institute for Radio Astronomy
Anantua, Richard J.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Asada, Keiichi
Unknown Affiliation
Azulay, Rebecca
Germany, Bonn
Max Planck Institute for Radio Astronomy
Spain, Valencia
Universitat de València
Bach, Uwe
Germany, Bonn
Max Planck Institute for Radio Astronomy
Baczko, Anne Kathrin
Germany, Bonn
Max Planck Institute for Radio Astronomy
Ball, David
United States, Tucson
The University of Arizona
Baloković, Mislav
Unknown Affiliation
Barrett, John P.
United States, Westford
Mit Haystack Observatory
Bauböck, Michi
Unknown Affiliation
Benson, Bradford A.
Unknown Affiliation
Bintley, Dan I.
Unknown Affiliation
Blundell, Raymond
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Bower, Geoffrey C.
Unknown Affiliation
Boyce, Hope
Unknown Affiliation
Bremer, Michael A.R.
Unknown Affiliation
Brinkerink, Christiaan D.
Netherlands, Nijmegen
Radboud Universiteit
Brissenden, Roger J.V.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Britzen, Silke
Germany, Bonn
Max Planck Institute for Radio Astronomy
Broguière, Dominique
Unknown Affiliation
Bronzwaer, Thomas
Netherlands, Nijmegen
Radboud Universiteit
Bustamante, Sandra
Unknown Affiliation
Byun, Do-young
Unknown Affiliation
Carlstrom, John E.
Unknown Affiliation
Ceccobello, Chiara
Unknown Affiliation
Chael, Andrew A.
Unknown Affiliation
Chatterjee, Koushik
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Chatterjee, S.
Unknown Affiliation
Chen, Mingtang
Unknown Affiliation
Chen, Yongjun
China, Beijing
Chinese Academy of Sciences
Cheng, Xiaopeng
Unknown Affiliation
Christian, Pierre
Unknown Affiliation
Conroy, Nicholas S.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Conway, John E.
Unknown Affiliation
Cordes, James M.
Unknown Affiliation
Crawford, Thomas M.
Unknown Affiliation
Crew, Geoffrey B.
United States, Westford
Mit Haystack Observatory
Cruz-Osorio, A.
Unknown Affiliation
Cui, Yuzhu
Unknown Affiliation
Davelaar, Jordy R.J.
Netherlands, Nijmegen
Radboud Universiteit
de Laurentis, Mariafelicia
Unknown Affiliation
Deane, Roger P.
Unknown Affiliation
Dempsey, Jessica T.
Unknown Affiliation
Desvignes, Gregory
Germany, Bonn
Max Planck Institute for Radio Astronomy
Dexter, Jason
Unknown Affiliation
Dhruv, Vedant
Unknown Affiliation
Doeleman, Sheperd S.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Dougal, Sean
United States, Tucson
The University of Arizona
Dzib, Sergio A.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Eatough, Ralph P.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Emami, Razieh
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Falcke, Heino D.
Netherlands, Nijmegen
Radboud Universiteit
Farah, Joseph R.
Unknown Affiliation
Fish, Vincent L.
United States, Westford
Mit Haystack Observatory
Fomalont, Edward B.
Unknown Affiliation
Ford, H. Alyson
United States, Tucson
The University of Arizona
Fraga-Encinas, Raquel
Netherlands, Nijmegen
Radboud Universiteit
Freeman, William T.
Unknown Affiliation
Friberg, Per
Unknown Affiliation
Fromm, Christian M.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Galison, Peter Louis
United States, Cambridge
Harvard University
Gammie, Charles F.
Unknown Affiliation
García, Roberto
Unknown Affiliation
Gentaz, Olivier
Unknown Affiliation
Georgiev, Boris
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Canada, Waterloo
University of Waterloo
Goddi, Ciriaco
Unknown Affiliation
Gold, Roman
Unknown Affiliation
Gómez-Ruiz, Arturo I.
Unknown Affiliation
Gu, Minfeng
China, Beijing
Chinese Academy of Sciences
Hada, Kazuhiro
Unknown Affiliation
Haggard, Daryl
Unknown Affiliation
Haworth, Kari
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Hecht, Michael
United States, Westford
Mit Haystack Observatory
Hesper, Ronald
Unknown Affiliation
Heumann, Dirk
United States, Tucson
The University of Arizona
Ho, Luis C.
Unknown Affiliation
Ho, Paul T.P.
Unknown Affiliation
Honma, Mareki
Unknown Affiliation
Huang, Chih Wei Locutus
Unknown Affiliation
Huang, Lei
China, Beijing
Chinese Academy of Sciences
Hughes, David H.
Unknown Affiliation
Ikeda, Shiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Impellizzeri, Caterina M.Violette
Unknown Affiliation
Inoue, Makoto
Unknown Affiliation
James, David J.
Unknown Affiliation
Jannuzi, Buell T.
United States, Tucson
The University of Arizona
Jeter, Britton
Unknown Affiliation
Jiang, Wu
China, Beijing
Chinese Academy of Sciences
Jiménez-Rosales, Alejandra
Netherlands, Nijmegen
Radboud Universiteit
Joshi, Abhishek V.
Unknown Affiliation
Jung, Taehyun
Unknown Affiliation
Karami, Mansour
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Canada, Waterloo
University of Waterloo
Karuppusamy, Ramesh
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kawashima, Tomohisa
Unknown Affiliation
Keating, Garrett K.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Kettenis, Mark M.
Unknown Affiliation
Kim, Dongjin
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kim, Jongsoo
Unknown Affiliation
Kim, Junhan
United States, Pasadena
California Institute of Technology
Kino, Motoki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Koay, J. Y.
Unknown Affiliation
Kocherlakota, Prashant
Unknown Affiliation
Kofuji, Yutaro
Unknown Affiliation
Koyama, Shoko
Unknown Affiliation
Kramer, Carsten
Unknown Affiliation
Kramer, Michael
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kuo, Chengyu
Unknown Affiliation
Lauer, Tod R.
Unknown Affiliation
Lee, Daeyoung
Unknown Affiliation
Lee, Sang-sung
Unknown Affiliation
Levis, Aviad
United States, Pasadena
California Institute of Technology
Li, Zhiyuan
Unknown Affiliation
Lindqvist, Michael
Unknown Affiliation
Lisakov, Mikhail M.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Liu, Kuo
Germany, Bonn
Max Planck Institute for Radio Astronomy
Liuzzo, Elisabetta
Unknown Affiliation
Lo, Wenping
Unknown Affiliation
Lobanov, Andreï P.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Loinard, Laurent
Unknown Affiliation
Lonsdale, Colin J.
United States, Westford
Mit Haystack Observatory
MacDonald, Nicholas Roy
Germany, Bonn
Max Planck Institute for Radio Astronomy
Mao, Jirong
Unknown Affiliation
Marchili, Nicola
Germany, Bonn
Max Planck Institute for Radio Astronomy
Markoff, Sera B.
Unknown Affiliation
Marrone, Daniel P.
United States, Tucson
The University of Arizona
Marscher, Alan P.
United States, Boston
Boston University
Matsushita, Satoki
Unknown Affiliation
Matthews, Lynn D.
United States, Westford
Mit Haystack Observatory
Medeiros, Lia
United States, Tucson
The University of Arizona
Menten, Karlm M.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Michalik, Daniel
Unknown Affiliation
Mizuno, Yosuke
Unknown Affiliation
Moran, James M.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Moriyama, Kotaro
United States, Westford
Mit Haystack Observatory
Müller, Cornelia
Germany, Bonn
Max Planck Institute for Radio Astronomy
Netherlands, Nijmegen
Radboud Universiteit
Mus, Alejandro
Spain, Valencia
Universitat de València
Myserlis, Ioannis
Unknown Affiliation
Nadolski, Andrew
Unknown Affiliation
Nagai, Hiroshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Nagar, Neil M.
Chile, Biobio
Universidad de Concepcion
Narayan, Ramesh
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Natarajan, Iniyan
Unknown Affiliation
Nathanail, Antonios
Unknown Affiliation
Neilsen, Joseph
Unknown Affiliation
Neri, Roberto
Unknown Affiliation
Ni, Chunchong
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Canada, Waterloo
University of Waterloo
Noutsos, Aristeidis
Germany, Bonn
Max Planck Institute for Radio Astronomy
Nowak, Michael A.
Unknown Affiliation
Olivares Sánchez, H. R.
Netherlands, Nijmegen
Radboud Universiteit
Ortiz-León, Gisela N.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Oyama, Tomoaki
Unknown Affiliation
Özel, Feryal
United States, Tucson
The University of Arizona
Palumbo, Daniel C.M.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Parsons, Harriet A.L.
Unknown Affiliation
Patel, Nimesh A.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Pen, Ue Li
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Plambeck, Richard L.
Unknown Affiliation
Porth, Oliver
Unknown Affiliation
Prather, Ben S.
Unknown Affiliation
Preciado-López, Jorge A.
Canada, Waterloo
Perimeter Institute for Theoretical Physics
Psaltis, Dimitrios
United States, Tucson
The University of Arizona
Pu, Hungyi
Unknown Affiliation
Rao, Ramprasad
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Rawlings, Mark G.
Unknown Affiliation
Rezzolla, Luciano
Unknown Affiliation
Ricarte, Angelo
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Ripperda, Bart
Unknown Affiliation
Roelofs, Freek
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Netherlands, Nijmegen
Radboud Universiteit
Rogers, Alan E.E.
United States, Westford
Mit Haystack Observatory
Ros, Eduardo
Germany, Bonn
Max Planck Institute for Radio Astronomy
Romero-Cañizales, Cristina
Unknown Affiliation
Rygl, Kazi L.J.
Unknown Affiliation
Sánchez, Salvador
Unknown Affiliation
Sánchez-Argüelles, D. O.
Unknown Affiliation
Śanchez-Portal, Miguel
Unknown Affiliation
Sasada, Mahito
Unknown Affiliation
Satapathy, Kaushik
United States, Tucson
The University of Arizona
Savolainen, Tuomas K.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Finland, Espoo
Aalto University
Schuster, Karl Friedrich
Unknown Affiliation
Shen, Zhiqiang
China, Beijing
Chinese Academy of Sciences
Small, Des
Unknown Affiliation
Sohn, Bongwon
Unknown Affiliation
Tazaki, Fumie
Unknown Affiliation
Tetarenko, Alexandra J.
Unknown Affiliation
Tiede, Paul
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Tilanus, Remo P.J.
United States, Tucson
The University of Arizona
Netherlands, Nijmegen
Radboud Universiteit
Torne, Pablo
Germany, Bonn
Max Planck Institute for Radio Astronomy
Trippe, Sascha
Unknown Affiliation
Turk, Matthew J.
Unknown Affiliation
van Langevelde, Huib Jan
Unknown Affiliation
Vos, Jesse
Netherlands, Nijmegen
Radboud Universiteit
Wagner, Jan F.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Ward-Thompson, Derek
Unknown Affiliation
Weintroub, Jonathan
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Cambridge
Harvard University
Wex, Norbert
Germany, Bonn
Max Planck Institute for Radio Astronomy
Wharton, Robert S.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Wiik, Kaj J.
Unknown Affiliation
Witzel, Günther
Germany, Bonn
Max Planck Institute for Radio Astronomy
Wong, George N.
Unknown Affiliation
Yoon, Doosoo
Unknown Affiliation
Young, Kenneth H.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Younsi, Ziri
Unknown Affiliation
Yuan, Yefei
Unknown Affiliation
Statistics
Citations: 3
Authors: 231
Affiliations: 21
Identifiers
Doi:
10.3847/1538-4357/acaea8
ISSN:
0004637X
Research Areas
Environmental