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The Effects of Large-scale Magnetic Fields on the Model for Repeating Changing-look AGNs
Pan, Xin1,2; Li, Shuang-Liang1,2; Cao, Xinwu3,4,5
2021-04-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume910Issue:2Pages:5
AbstractPeriodic outbursts are observed in several changing-look (CL) active galactic nuclei (AGNs). Sniegowska et al. suggested a model to explain the repeating CL in these AGNs, where the periodic outbursts are triggered in a narrow unstable zone between an inner advection-dominated accretion flow and outer thin disk. In this work, we intend to investigate the effects of large-scale magnetic fields on the limit cycle behaviors of CL AGNs. The winds driven by magnetic fields can significantly change the structure of thin disk by taking away the angular momentum and energy of the disk. It is found that the period of outburst in repeating CL AGNs can be substantially reduced by the magnetic fields. Conversely, if we keep the period unchanged, the outburst intensity can be raised by several times. These results can help to explain the observational properties of multiple CL AGNs. Besides the magnetic fields, the effects of transition radius R-tr, the width of the transition zone Delta R, and the Shakura-Sunyaev parameter alpha are also explored in this work.
KeywordMagnetic fields Galaxy accretion disks Active galactic nuclei
Funding OrganizationNSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC
DOI10.3847/1538-4357/abe766
Language英语
Funding ProjectNSFC[11773056] ; NSFC[11773050] ; NSFC[11833007] ; NSFC[12073023]
Funding OrganizationNSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000635890800001
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78624
Collection中国科学院国家天文台
Corresponding AuthorPan, Xin
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Zhejiang Univ, Zhejiang Inst Modern Phys, Dept Phys, 38 Zheda Rd, Hangzhou 310027, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
5.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Pan, Xin,Li, Shuang-Liang,Cao, Xinwu. The Effects of Large-scale Magnetic Fields on the Model for Repeating Changing-look AGNs[J]. ASTROPHYSICAL JOURNAL,2021,910(2):5.
APA Pan, Xin,Li, Shuang-Liang,&Cao, Xinwu.(2021).The Effects of Large-scale Magnetic Fields on the Model for Repeating Changing-look AGNs.ASTROPHYSICAL JOURNAL,910(2),5.
MLA Pan, Xin,et al."The Effects of Large-scale Magnetic Fields on the Model for Repeating Changing-look AGNs".ASTROPHYSICAL JOURNAL 910.2(2021):5.
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