NAOC Open IR
Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm
Cui, Lang1,2; Lu, Ru-Sen2,3,4; Yu, Wei3; Liu, Jun4; Patino-Alvarez, Victor M.4,5; Yuan, Qi1,6
2021-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:4Pages:5
AbstractHigh resolution imaging of inner jets in Active Galactic Nuclei (AGNs) with Very Long Baseline Interferometry (VLBI) at millimeter wavelengths provides deep insight into the launching and collimation mechanisms of relativistic jets. The BL Lac object, PKS 1749+096, shows a core-dominated jet pointing toward the northeast on parsec-scales revealed by various VLBI observations. In order to investigate the jet kinematics, in particular, the orientation of the inner jet on the smallest accessible scales and the basic physical conditions of the core, in this work we adopted a super-resolution technique, the Bi-Spectrum Maximum Entropy Method (BSMEM), to reanalyze VLBI images based on the Very Long Baseline Array (VLBA) observations of PKS 1749+096within the VLBA-BU-BLAZAR 7mm monitoring program. These observations include a total of 105 epochs covering the period from 2009 to 2019. We found that the stacked image of the inner jet is limb-brightened with an apparent opening angle of 50 degrees 0 +/- 8 degrees 0 and 42 degrees 0 +/- 6 degrees 0 at the distances of 0.2 and 0.3 mas (0.9 and 1.4 pc) from the core, corresponding to an intrinsic jet opening angle of 5 degrees 2 +/- 1 degrees 0 and 4 degrees 3 +/- 0 degrees 7, respectively. In addition, our images show a clear jet position angle swing in \sr within the last ten years. We discuss the possible implications of jet limb brightening and the connection of the position angle with jet peak flux density and gamma-ray brightness.
Keywordgalaxies quasars individual PKS 1749+096 galaxies jets radio continuum galaxies
Funding OrganizationNASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS
DOI10.1088/1674-4527/21/4/91
WOS KeywordGAMMA-RAY EMISSION ; PARSEC-SCALE JET ; LAC OBJECTS ; RESOLUTION ; M87 ; BASE ; AGN
Language英语
Funding ProjectNASA through the Fermi Guest Investigator Program ; National Key R&D Program of China[2018YFA0404602] ; CAS 'Light of West China' Program[2018-XBQNXZ-B-021] ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC)[11933007] ; Research Program of Fundamental and Frontier Sciences, CAS[ZDBS-LY-SLH011] ; NSFC[61931002] ; NSFC[U1731103] ; Youth Innovation Promotion Association of the CAS[2017084]
Funding OrganizationNASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; NASA through the Fermi Guest Investigator Program ; NASA through the Fermi Guest Investigator Program ; National Key R&D Program of China ; National Key R&D Program of China ; CAS 'Light of West China' Program ; CAS 'Light of West China' Program ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at SHAO ; Max Planck Partner Group at INAOE ; Max Planck Partner Group at INAOE ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; NSFC ; NSFC ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000657382900001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77129
Collection中国科学院国家天文台
Corresponding AuthorLu, Ru-Sen
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
4.Max Planck Inst Radio Astron, Hugel 69, D-53121 Bonn, Germany
5.Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Cui, Lang,Lu, Ru-Sen,Yu, Wei,et al. Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(4):5.
APA Cui, Lang,Lu, Ru-Sen,Yu, Wei,Liu, Jun,Patino-Alvarez, Victor M.,&Yuan, Qi.(2021).Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(4),5.
MLA Cui, Lang,et al."Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.4(2021):5.
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