NAOC Open IR
Probing the elliptical orbital configuration of the close binary of supermassive black holes with differential interferometry
Kovacevic, Andjelka B.1; Songsheng, Yu-Yang2,3; Wang, Jian-Min2,3,4; Popovic, Luka C.1,5
2020-12-04
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume644Pages:31
AbstractContext. Obtaining detections of electromagnetic signatures from the close binaries of supermassive black holes (CB-SMBH) is still a great observational challenge. The Very Large Telescope Interferometer (VLTI) and the Extremely Large Telescope (ELT) will serve as a robust astrophysics suite offering the opportunity to probe the structure and dynamics of CB-SMBH at a high spectral and angular resolution.Aims. Here, we explore and illustrate the application of differential interferometry on unresolved CB-SMBH systems in elliptical orbital configurations. We also investigate certain peculiarities of interferometry signals for a single SMBH with clouds in elliptical orbital motion.Methods. Photocentre displacements between each SMBH and the regions in their disc-like broad line regions (BLR) appear as small interferometric differential phase variability. To investigate the application of interferometric phases for the detection of CB-SMBH systems, we simulated a series of differential interferometry signatures, based on our model comprising ensembles of clouds surrounding each supermassive black hole in a CB-SMBH. By setting the model to the parameters of a single SMBH with elliptical cloud motion, we also calculated a series of differential interferometry observables for this case.Results. We found various deviations from the canonical S-shape of the CB-SMBH phase profile for elliptically configured CB-SMBH systems. The amplitude and specific shape of the interferometry observables depend on the orbital configurations of the CB-SMBH system. We get distinctive results when considering anti-aligned angular momenta of cloud orbits with regard to the total CB-SMBH angular momentum. We also show that their velocity distributions differ from the aligned cloud orbital motion. Some simulated spectral lines from our model closely resemble observations from the Pa alpha line obtained from near-infrared AGN surveys. We found differences between the "zoo" of differential phases of single SMBH and CB-SMBH systems. The "zoo" of differential phases for a single SMBH take a deformed S shape. We also show how their differential phase shape, amplitude, and slope evolve with various sets of cloud orbital parameters and the observer's position.Conclusions. We calculate an extensive atlas of the interferometric observables, revealing distinctive signatures for the elliptical configuration CB-SMBH. We also provide an interferometry atlas for the case of a single SMBH with clouds with an elliptical motion, which differs from those of a CB-SMBH. These maps can be useful for extracting exceptional features of the BLR structure from future high-resolution observations of CB-SMBH systems, but also of a single SMBH with clouds in an elliptical orbital setup.
Keywordtechniques: interferometric quasars: supermassive black holes quasars: emission lines
Funding OrganizationMinistry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
DOI10.1051/0004-6361/202038733
WOS KeywordBROAD-LINE REGION ; ACTIVE GALACTIC NUCLEI ; PEAKED EMISSION-LINES ; AGN MONITORING PROJECT ; REVERBERATION MEASUREMENTS ; PROFILE VARIABILITY ; MASS ; ACCRETION ; QUASARS ; MERGERS
Language英语
Funding ProjectMinistry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project[176001] ; National Key R&D Program of China[2016YFA0400701] ; NSFC[NSFC-11991050] ; NSFC[NSFC-11873048] ; Key Research Program of Frontier Sciences, CAS[QYZD-SSW-SLH007] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23010400]
Funding OrganizationMinistry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; Ministry of Education, Science and Technological development of Republic Serbia through the Astrophysical Spectroscopy of Extragalactic Objects project ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000597331600001
PublisherEDP SCIENCES S A
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80107
Collection中国科学院国家天文台
Corresponding AuthorKovacevic, Andjelka B.
Affiliation1.Univ Belgrade, Fac Math, Dept Astron, Studentski Trg 16, Belgrade 11000, Serbia
2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100020, Peoples R China
5.Astron Observ Belgrade, Volgina 7,POB 74, Belgrade 11060, Serbia
Recommended Citation
GB/T 7714
Kovacevic, Andjelka B.,Songsheng, Yu-Yang,Wang, Jian-Min,et al. Probing the elliptical orbital configuration of the close binary of supermassive black holes with differential interferometry[J]. ASTRONOMY & ASTROPHYSICS,2020,644:31.
APA Kovacevic, Andjelka B.,Songsheng, Yu-Yang,Wang, Jian-Min,&Popovic, Luka C..(2020).Probing the elliptical orbital configuration of the close binary of supermassive black holes with differential interferometry.ASTRONOMY & ASTROPHYSICS,644,31.
MLA Kovacevic, Andjelka B.,et al."Probing the elliptical orbital configuration of the close binary of supermassive black holes with differential interferometry".ASTRONOMY & ASTROPHYSICS 644(2020):31.
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