The Event Horizon Telescope Image of the Quasar NRAO 530-Reference-Cited by-同舟云学术

The Event Horizon Telescope Image of the Quasar NRAO 530

Published:2023-02-01 Issue:2 Volume:943 Page:170
ISSN:0004-637X
Container-title:The Astrophysical Journal
language:
Short-container-title:ApJ

Author:

Jorstad Svetlana^ORCID,Wielgus Maciek^ORCID,Lico Rocco^ORCID,Issaoun Sara^ORCID,Broderick Avery E.^ORCID,Pesce Dominic W.^ORCID,Liu 刘 Jun 俊^ORCID,Zhao Guang-Yao^ORCID,Krichbaum Thomas P.^ORCID,Blackburn Lindy^ORCID,Chan Chi-kwan^ORCID,Janssen Michael^ORCID,Ramakrishnan Venkatessh^ORCID,Akiyama Kazunori^ORCID,Alberdi Antxon^ORCID,Algaba Juan Carlos^ORCID,Bouman Katherine L.^ORCID,Cho Ilje^ORCID,Fuentes Antonio^ORCID,Gómez José L.^ORCID,Gurwell Mark^ORCID,Johnson Michael D.^ORCID,Kim Jae-Young^ORCID,Lu 路 Ru-Sen 如森^ORCID,Martí-Vidal Iván^ORCID,Moscibrodzka Monika^ORCID,Pötzl Felix M.^ORCID,Traianou Efthalia^ORCID,van Bemmel Ilse^ORCID,Alef Walter,Anantua Richard^ORCID,Asada Keiichi^ORCID,Azulay Rebecca^ORCID,Bach Uwe^ORCID,Baczko Anne-Kathrin^ORCID,Ball David,Baloković Mislav^ORCID,Barrett John^ORCID,Bauböck Michi^ORCID,Benson Bradford A.^ORCID,Bintley Dan,Blundell Raymond^ORCID,Bower Geoffrey C.^ORCID,Boyce Hope^ORCID,Bremer Michael,Brinkerink Christiaan D.^ORCID,Brissenden Roger^ORCID,Britzen Silke^ORCID,Broguiere Dominique^ORCID,Bronzwaer Thomas^ORCID,Bustamante Sandra^ORCID,Byun Do-Young^ORCID,Carlstrom John E.^ORCID,Ceccobello Chiara^ORCID,Chael Andrew^ORCID,Chatterjee Koushik^ORCID,Chatterjee Shami^ORCID,Chen Ming-Tang^ORCID,Chen 陈 Yongjun 永军^ORCID,Cheng Xiaopeng^ORCID,Christian Pierre^ORCID,Conroy Nicholas S.^ORCID,Conway John E.^ORCID,Cordes James M.^ORCID,Crawford Thomas M.^ORCID,Crew Geoffrey B.^ORCID,Cruz-Osorio Alejandro^ORCID,Cui 崔 Yuzhu 玉竹^ORCID,Davelaar Jordy^ORCID,De Laurentis Mariafelicia^ORCID,Deane Roger^ORCID,Dempsey Jessica^ORCID,Desvignes Gregory^ORCID,Dexter Jason^ORCID,Dhruv Vedant^ORCID,Doeleman Sheperd S.^ORCID,Dougal Sean^ORCID,Dzib Sergio A.^ORCID,Eatough Ralph P.^ORCID,Emami Razieh^ORCID,Falcke Heino^ORCID,Farah Joseph^ORCID,Fish Vincent L.^ORCID,Fomalont Ed^ORCID,Ford H. Alyson^ORCID,Fraga-Encinas Raquel^ORCID,Freeman William T.,Friberg Per^ORCID,Fromm Christian M.^ORCID,Galison Peter^ORCID,Gammie Charles F.^ORCID,García Roberto^ORCID,Gentaz Olivier^ORCID,Georgiev Boris^ORCID,Goddi Ciriaco^ORCID,Gold Roman^ORCID,Gómez-Ruiz Arturo I.^ORCID,Gu 顾 Minfeng 敏峰^ORCID,Hada Kazuhiro^ORCID,Haggard Daryl^ORCID,Haworth Kari,Hecht Michael H.^ORCID,Hesper Ronald^ORCID,Heumann Dirk^ORCID,Ho 何 Luis C. 子山^ORCID,Ho Paul^ORCID,Honma Mareki^ORCID,Huang Chih-Wei L.^ORCID,Huang 黄 Lei 磊^ORCID,Hughes David H.,Ikeda Shiro^ORCID,Impellizzeri C. M. Violette^ORCID,Inoue Makoto^ORCID,James David J.^ORCID,Jannuzi Buell T.^ORCID,Jeter Britton^ORCID,Jiang 江 Wu 悟^ORCID,Jiménez-Rosales Alejandra^ORCID,Joshi Abhishek V.^ORCID,Jung Taehyun^ORCID,Karami Mansour^ORCID,Karuppusamy Ramesh^ORCID,Kawashima Tomohisa^ORCID,Keating Garrett K.^ORCID,Kettenis Mark^ORCID,Kim Dong-Jin^ORCID,Kim Jongsoo^ORCID,Kim Junhan^ORCID,Kino Motoki^ORCID,Koay Jun Yi^ORCID,Kocherlakota Prashant^ORCID,Kofuji Yutaro,Koyama Shoko^ORCID,Kramer Carsten^ORCID,Kramer Michael^ORCID,Kuo Cheng-Yu^ORCID,La Bella Noemi^ORCID,Lauer Tod R.^ORCID,Lee Daeyoung^ORCID,Lee Sang-Sung^ORCID,Leung Po Kin^ORCID,Levis Aviad^ORCID,Li 李 Zhiyuan 志远^ORCID,Lindahl Greg^ORCID,Lindqvist Michael^ORCID,Lisakov Mikhail^ORCID,Liu Kuo^ORCID,Liuzzo Elisabetta^ORCID,Lo Wen-Ping^ORCID,Lobanov Andrei P.^ORCID,Loinard Laurent^ORCID,Lonsdale Colin J.^ORCID,MacDonald Nicholas R.^ORCID,Mao 毛 Jirong 基荣^ORCID,Marchili Nicola^ORCID,Markoff Sera^ORCID,Marrone Daniel P.^ORCID,Marscher Alan P.^ORCID,Matsushita Satoki^ORCID,Matthews Lynn D.^ORCID,Medeiros Lia^ORCID,Menten Karl M.^ORCID,Michalik Daniel^ORCID,Mizuno Izumi^ORCID,Mizuno Yosuke^ORCID,Moran James M.^ORCID,Moriyama Kotaro^ORCID,Müller Cornelia^ORCID,Mus Alejandro^ORCID,Musoke Gibwa^ORCID,Myserlis Ioannis^ORCID,Nadolski Andrew^ORCID,Nagai Hiroshi^ORCID,Nagar Neil M.^ORCID,Nakamura Masanori^ORCID,Narayan Ramesh^ORCID,Narayanan Gopal^ORCID,Natarajan Iniyan^ORCID,Nathanail Antonios,Fuentes Santiago Navarro,Neilsen Joey^ORCID,Neri Roberto^ORCID,Ni Chunchong^ORCID,Noutsos Aristeidis^ORCID,Nowak Michael A.^ORCID,Oh Junghwan^ORCID,Okino Hiroki^ORCID,Olivares Héctor^ORCID,Ortiz-León Gisela N.^ORCID,Oyama Tomoaki^ORCID,Özel Feryal^ORCID,Palumbo Daniel C. M.^ORCID,Paraschos Georgios Filippos^ORCID,Park Jongho^ORCID,Parsons Harriet^ORCID,Patel Nimesh^ORCID,Pen Ue-Li^ORCID,Piétu Vincent,Plambeck Richard^ORCID,PopStefanija Aleksandar,Porth Oliver^ORCID,Prather Ben^ORCID,Preciado-López Jorge A.^ORCID,Psaltis Dimitrios^ORCID,Pu Hung-Yi^ORCID,Rao Ramprasad^ORCID,Rawlings Mark G.^ORCID,Raymond Alexander W.^ORCID,Rezzolla Luciano^ORCID,Ricarte Angelo^ORCID,Ripperda Bart^ORCID,Roelofs Freek^ORCID,Rogers Alan^ORCID,Ros Eduardo^ORCID,Romero-Cañizales Cristina^ORCID,Roshanineshat Arash^ORCID,Rottmann Helge,Roy Alan L.^ORCID,Ruiz Ignacio^ORCID,Ruszczyk Chet^ORCID,Rygl Kazi L. J.^ORCID,Sánchez Salvador^ORCID,Sánchez-Argüelles David^ORCID,Sánchez-Portal Miguel^ORCID,Sasada Mahito^ORCID,Satapathy Kaushik^ORCID,Savolainen Tuomas^ORCID,Schloerb F. Peter,Schonfeld Jonathan^ORCID,Schuster Karl-Friedrich^ORCID,Shao Lijing^ORCID,Shen 沈 Zhiqiang 志强^ORCID,Small Des^ORCID,Sohn Bong Won^ORCID,SooHoo Jason^ORCID,Souccar Kamal^ORCID,Sun 孙 He 赫^ORCID,Tazaki Fumie^ORCID,Tetarenko Alexandra J.^ORCID,Tiede Paul^ORCID,Tilanus Remo P. J.^ORCID,Titus Michael^ORCID,Torne Pablo^ORCID,Trent Tyler,Trippe Sascha^ORCID,Turk Matthew^ORCID,van Langevelde Huib Jan^ORCID,van Rossum Daniel R.^ORCID,Vos Jesse^ORCID,Wagner Jan^ORCID,Ward-Thompson Derek^ORCID,Wardle John^ORCID,Weintroub Jonathan^ORCID,Wex Norbert^ORCID,Wharton Robert^ORCID,Wiik Kaj^ORCID,Witzel Gunther^ORCID,Wondrak Michael F.^ORCID,Wong George N.^ORCID,Wu 吴 Qingwen 庆文^ORCID,Yamaguchi Paul^ORCID,Yoon Doosoo^ORCID,Young André^ORCID,Young Ken^ORCID,Younsi Ziri^ORCID,Yuan 袁 Feng 峰^ORCID,Yuan 袁 Ye-Fei 业飞^ORCID,Zensus J. Anton^ORCID,Zhang Shuo^ORCID,Zhao 赵 Shan-Shan 杉杉^ORCID

Abstract

Abstract 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.

Funder

NSF ∣ Directorate for Mathematical and Physical Sciences

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://iopscience.iop.org/article/10.3847/1538-4357/acaea8/pdf

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