Changing-look active galactic nuclei: close binaries of supermassive black holes in action

被引:32
|
作者
Wang, Jian-Min [1 ,2 ,3 ]
Bon, Edi [4 ]
机构
[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China
[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100020, Peoples R China
[4] Astron Observ Belgrade, Volgina 7, Belgrade 11060, Serbia
基金
国家重点研发计划;
关键词
galaxies: active; black hole physics; accretion; accretion disks; quasars: supermassive black holes; CIRCUMBINARY ACCRETION DISCS; MISALIGNED ACCRETION; SYSTEMATIC SEARCH; VARIABILITY; GAS; RETROGRADE; TRANSITION; SIGNATURES; DYNAMICS; MODELS;
D O I
10.1051/0004-6361/202039368
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Changing-look active galactic nuclei (CL-AGNs) as a new subpopulation challenge some fundamental physics of AGNs because the timescales of the phenomenon can hardly be reconciled with accretion disk models. In this Letter, we demonstrate the extreme case: close binaries of supermassive black holes (CB-SMBHs) with high eccentricities are able to trigger the CL transition through one orbit. In this scenario, binary black holes build up their own mini-disks by peeling gas off the inner edges of the circumbinary disk during the apastron phase, after which they tidally interact with the disks during the periastron phase to efficiently exchange angular momentum within one orbital period. For mini-disks rotating retrograde to the orbit, the tidal torque rapidly squeezes the tidal parts of the mini-disks into a much smaller radius, which rapidly results in higher accretion and short flares before the disks decline into type-2 AGNs. Prograde-rotation mini-disks gain angular momentum from the binary and rotate outward, which causes a rapid turn-off from type-1 to type-2. Turn-on occurs around the apastron phase. CB-SMBHs control cycle transitions between type-1 and type-2 with orbital periods but allow diverse properties in CL-AGN light curves.
引用
收藏
页数:6
相关论文
共 50 条
  • [1] Observational signatures of close binaries of supermassive black holes in active galactic nuclei
    Wang, Jian-Min
    Li, Yan-Rong
    RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2020, 20 (10)
  • [2] Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei
    Wang, Jian-Min
    Songsheng, Yu-Yang
    Li, Yan-Rong
    Yu, Zhe
    ASTROPHYSICAL JOURNAL, 2018, 862 (02)
  • [3] Differential Interferometric Signatures of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei
    Songsheng, Yu-Yang
    Wang, Jian-Min
    Li, Yan-Rong
    Du, Pu
    ASTROPHYSICAL JOURNAL, 2019, 881 (02)
  • [4] Recoiling Supermassive Black Hole in Changing-look AGN Mrk 1018
    Kim, D. -C.
    Yoon, Ilsang
    Evans, A. S.
    ASTROPHYSICAL JOURNAL, 2018, 861 (01)
  • [5] Possible mechanism for multiple changing-look phenomena in active galactic nuclei
    Sniegowska, M.
    Czerny, B.
    Bon, E.
    Bon, N.
    ASTRONOMY & ASTROPHYSICS, 2020, 641 (641)
  • [6] Supermassive black holes in galactic nuclei
    Cavaliere, A
    Vittorini, V
    ASTROPHYSICAL JOURNAL, 2002, 570 (01) : 114 - 118
  • [7] Low-Eddington ratio, changing-look active galactic nuclei: The case of NGC 4614
    Lusso, Elisabeta
    Casetti, Lapo
    Romoli, Marco
    Fossi, Lara
    Nardini, Emanuele
    Arra, Emanuele
    Barsi, Benedetta
    Calamai, Clarissa
    Campani, Francesca
    Capogrosso, Riccardo
    Chiti Tegli, Francesco
    Ciantini, Riccardo
    Demertzi, Eirini
    Gaitani, Marina A.
    Giudice, Asia
    Gori, Alessia
    Graziani, Lorenzo
    Macchiarini, Laura
    Michelagnoli, Marianna
    Niccolai, Chiara
    Parenti, Irene
    Pistolesi, Simone
    Rago, Martina
    Romani, Ofelia
    Sani, Leonardo
    Sartini, Jacopo
    Scianni, Matilde
    Triggianese, Alba
    Andreuzzi, Gloria
    Ambrosino, Filippo
    ASTRONOMY & ASTROPHYSICS, 2025, 695
  • [8] A statistical method to search for recoiling supermassive black holes in active galactic nuclei
    Raffai, P.
    Haiman, Z.
    Frei, Z.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 455 (01) : 484 - 492
  • [9] Discovery of an Mg II Changing-look Active Galactic Nucleus and Its Implications for a Unification Sequence of Changing-look Active Galactic Nuclei
    Guo, Hengxiao
    Sun, Mouyuan
    Liu, Xin
    Wang, Tinggui
    Kong, Minzhi
    Wang, Shu
    Sheng, Zhenfeng
    He, Zhicheng
    ASTROPHYSICAL JOURNAL LETTERS, 2019, 883 (02)
  • [10] The NuSTAR view of five changing-look active galactic nuclei
    Lyu, Bing
    Yan, Zhen
    Wu, Xue-bing
    Wu, Qingwen
    Yu, Wenfei
    Liu, Hao
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2025, 537 (02) : 1099 - 1114