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Magnetically driven relativistic jet in the high-redshift blazar OH 471

文献类型：期刊论文

作者Guo, S.1,10,11; An, T.1,10,11; Liu, Y.11; Sotnikova, Y.4,9; Volvach, A.2; Mufakharov, T.4,5,9; Chen, L.11; Cui, L.6; Wang, A.1,11; Xu, Z.11
刊名ASTRONOMY & ASTROPHYSICS
出版日期2024-05-17
卷号685页码:L11
关键词galaxies: high-redshift BL Lacertae objects: individual: 0642+449 galaxies: magnetic fields
ISSN号0004-6361
DOI10.1051/0004-6361/202449934
产权排序7
英文摘要Context. Understanding the mechanisms that launch and shape powerful relativistic jets from supermassive black holes (SMBHs) in high-redshift active galactic nuclei (AGNs) is crucial for probing the co-evolution of SMBHs and galaxies over cosmic time. Aims. We focus on the high-redshift (z = 3.396) blazar OH 471 to explore the jet launching mechanism in the early Universe. Methods. Using multi-frequency radio monitoring observations and high-resolution Very Long Baseline Interferometry (VLBI) imaging over three decades, we studied the milliarcsecond structure and long-term variability of OH 471. Results. Our spectral modeling of the radio flux densities revealed a synchrotron self-absorbed spectrum, indicating strong magnetic fields within the compact core. By applying the flux freezing approximation, we estimated the magnetic flux carried by the jet. We found that it reaches or exceeds theoretical predictions for jets powered by black hole spin energy via the Blandford-Znajek mechanism. This implies that OH 471 is in a magnetically arrested disk (MAD) state, where the magnetic flux accumulated near the horizon regulates the accretion flow, allowing for an efficient extraction of black hole rotational energy. Conclusions. Our study demonstrates the dominance of MAD accretion in powering the prominent radio flares and relativistic jets observed in the radio-loud AGN named OH 471. Statistical studies of larger samples of high-redshift AGNs will shed light on the role of MAD accretion in launching and accelerating the earliest relativistic jets.
WOS关键词FLUX-DENSITY SCALE ; HIGH-FREQUENCY PEAKERS ; GHZ VLBI SURVEY ; RADIO LOUDNESS ; BLACK-HOLES ; QUASARS ; MULTIFREQUENCY ; GROWTH ; KINEMATICS ; REDUCTION
资助项目National SKA Program of China ; Youth Innovation Promotion Association CAS Program[2021258] ; FAST Special Program[NSFC 12041301] ; Shanghai Post-doctoral Excellence Program ; Shanghai Sailing Program[23YF1455700] ; China Postdoctoral Science Foundation[2023M733625] ; University of Chinese Academy of Sciences ; European Research Council (ERC) under the European Union[101018682] ; Ministry of Science and Higher Education of the Russian Federation[075-15-2024-541] ; [2022SKA0120102] ; [2022SKA0130103]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001226200200009
出版者EDP SCIENCES S A
资助机构National SKA Program of China ; Youth Innovation Promotion Association CAS Program ; FAST Special Program ; Shanghai Post-doctoral Excellence Program ; Shanghai Sailing Program ; China Postdoctoral Science Foundation ; University of Chinese Academy of Sciences ; European Research Council (ERC) under the European Union ; Ministry of Science and Higher Education of the Russian Federation
源URL[http://ir.xao.ac.cn/handle/45760611-7/6895]  
专题星系宇宙学研究团组
通讯作者Guo, S.; An, T.
作者单位1.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
2.Crimean Astrophys Observ, Radio Astron & Geodynam Dept, Katsively 22, Crimea, Ukraine
3.Russian Acad Sci, Inst Appl Astron, Kutuzova Embankment 10, St Petersburg 191187, Russia
4.Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
5.Kazan Fed Univ, 18 Kremlyovskaya St, Kazan 420008, Russia
6.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
7.Lebedev Phys Inst, Astro Space Ctr, Leninsky prospect 53, Moscow 117997, Russia
8.Max Planck Inst Radioastron, Hugel 69, DE-53121 Bonn, Germany
9.RAS, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia
10.Key Lab Radio Astron & Technol, CAS, A20 Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Guo, S.,An, T.,Liu, Y.,et al. Magnetically driven relativistic jet in the high-redshift blazar OH 471[J]. ASTRONOMY & ASTROPHYSICS,2024,685:L11.
APA Guo, S..,An, T..,Liu, Y..,Sotnikova, Y..,Volvach, A..,...&Volvach, L..(2024).Magnetically driven relativistic jet in the high-redshift blazar OH 471.ASTRONOMY & ASTROPHYSICS,685,L11.
MLA Guo, S.,et al."Magnetically driven relativistic jet in the high-redshift blazar OH 471".ASTRONOMY & ASTROPHYSICS 685(2024):L11.

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