The Event Horizon Telescope Image of the Quasar NRAO 530
文献类型:期刊论文
作者 | Jorstad, Svetlana69; Wielgus, Maciek70; Lico, Rocco71,72; Issaoun, Sara3,68; Broderick, Avery E.65,66,67; Pesce, Dominic W.3,64; Liu, Jun70; Zhao, Guang-Yao71; Krichbaum, Thomas P.70; Blackburn, Lindy3,64 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2023-02-01 |
卷号 | 943期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/acaea8 |
产权排序 | 第106完成单位 |
文献子类 | Article |
英文摘要 | 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 similar to 20 mu as, 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 similar to 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 mu as along a position angle similar to -28 degrees. 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. |
学科主题 | 天文学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | SAGITTARIUS A-ASTERISK ; ACTIVE GALACTIC NUCLEI ; BASE-LINE INTERFEROMETRY ; PARSEC-SCALE JETS ; GAMMA-RAY BLAZARS ; BRIGHTNESS TEMPERATURE ; POLARIMETRIC OBSERVATIONS ; HIGH-FREQUENCIES ; BLACK-HOLE ; X-RAY |
资助项目 | Academia Sinica
; Academy of Finland[274477]
; Academy of Finland[284495]
; Academy of Finland[312496]
; Academy of Finland[315721]
; Fondecyt[U0004-246083]
; Fondecyt[1221421]
; Alexander von Humboldt Stiftung
; Alfred P. Sloan Research Fellowship
; European ALMA Regional Centre node in the Netherlands
; Allegro
; University of Amsterdam
; Leiden University
; Radboud University
; ALMA North America Development Fund
; John Templeton Foundation
; Gordon and Betty Moore Foundation
; Chandra[DD7-18089X]
; Chandra[TM6-17006X]
; China Scholarship Council
; China Postdoctoral Science Foundation fellowship[2020M671266]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004-246083]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004-259839]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[F0003-272050]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[M0037-279006]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[F0003-281692]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[104497]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[275201]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[263356]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[ |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000989733800001 |
资助机构 | Academia Sinica
; Academy of Finland[274477, 284495, 312496, 315721]
; Fondecyt[U0004-246083, 1221421]
; Alexander von Humboldt Stiftung
; Alfred P. Sloan Research Fellowship
; European ALMA Regional Centre node in the Netherlands
; Allegro
; University of Amsterdam
; Leiden University
; Radboud University
; ALMA North America Development Fund
; John Templeton Foundation
; Gordon and Betty Moore Foundation
; Chandra[DD7-18089X, TM6-17006X]
; China Scholarship Council
; China Postdoctoral Science Foundation fellowship[2020M671266]
; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004-246083, U0004-259839, F0003-272050, M0037-279006, F0003-281692, 104497, 275201, 263356, |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25959] |
专题 | 星系类星体研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Jorstad, Svetlana |
作者单位 | 1.Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, 2-12 Hoshigaoka, Mizusawa, Oshu, Iwate 023-0861, Japan; 2.Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 32-D476, 77 Massachusetts Avenue, Cambridge, MA 02142, USA; 3.Center for Astrophysics, Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA; 4.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA; 5.Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA; 6.Las Cumbres Observatory, 6740 Cortona Drive, Suite 102, Goleta, CA 93117-5575, USA; 7.Gemini Observatory/NSF NOIRLab, 670 N. A'ohoku Place, Hilo, HI 96720, USA; 8.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China; 9.JILA and Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USA; 10.LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France; |
推荐引用方式 GB/T 7714 | Jorstad, Svetlana,Wielgus, Maciek,Lico, Rocco,et al. The Event Horizon Telescope Image of the Quasar NRAO 530[J]. ASTROPHYSICAL JOURNAL,2023,943(2). |
APA | Jorstad, Svetlana.,Wielgus, Maciek.,Lico, Rocco.,Issaoun, Sara.,Broderick, Avery E..,...&Zhao, Shan-Shan.(2023).The Event Horizon Telescope Image of the Quasar NRAO 530.ASTROPHYSICAL JOURNAL,943(2). |
MLA | Jorstad, Svetlana,et al."The Event Horizon Telescope Image of the Quasar NRAO 530".ASTROPHYSICAL JOURNAL 943.2(2023). |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。