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Variable mass accretion and failed wind explain changing-look phenomena in NGC 1365

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SkyMapper colours of Seyfert galaxies and changing-look AGN – II. Newly discovered changing-look AGN

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BASS XXXIX: Swift-BAT AGN with changing-look optical spectra

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Long-term Variability of the Composite Galaxy SDSS J103911-000057: A True Type-2 AGN Candidate

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The impact of ionized outflows from z ∼ 2.5 quasars is not through instantaneous in situ quenching: the evidence from ALMA and VLT/SINFONI

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Dating individual quasars with the He ii proximity effect

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SUPER

I. Lamperti, C. M. Harrison, V. Mainieri, D. Kakkad, M. Perna, C. Circosta, J. Scholtz, S. Carniani, C. Cicone, D. M. Alexander, M. Bischetti, G. Calistro Rivera, C.-C. Chen, G. Cresci, C. Feruglio, F. Fiore, F. Mannucci, A. Marconi, L. N. Martínez-Ramírez, H. Netzer, E. Piconcelli, A. Puglisi, D. J. Rosario, M. Schramm, G. Vietri, et al.
Astronomy & Astrophysics 654 A90 (2021)
https://doi.org/10.1051/0004-6361/202141363

X-ray spectral evolution in an X-ray changing-look AGN NGC 1365 with variable column density

Hao Liu, Qing-Wen Wu, Yong-Quan Xue, Ting-Gui Wang, Jun Yang, Heng-Xiao Guo and Zhi-Cheng He
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Long-term and multiwavelength evolution of a changing-look AGN Mrk 1018

Bing Lyu, Zhen Yan, Wenfei Yu and Qingwen Wu
Monthly Notices of the Royal Astronomical Society 506 (3) 4188 (2021)
https://doi.org/10.1093/mnras/stab1581

Rapid Accretion State Transitions following the Tidal Disruption Event AT2018fyk

T. Wevers, D. R. Pasham, S. van Velzen, J. C. A. Miller-Jones, P. Uttley, K. C. Gendreau, R. Remillard, Z. Arzoumanian, M. Löwenstein and A. Chiti
The Astrophysical Journal 912 (2) 151 (2021)
https://doi.org/10.3847/1538-4357/abf5e2

A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590

Jun Yang, Ilse van Bemmel, Zsolt Paragi, S Komossa, Feng Yuan, Xiaolong Yang, Tao An, J Y Koay, C Reynolds, J B R Oonk, Xiang Liu and Qingwen Wu
Monthly Notices of the Royal Astronomical Society: Letters 502 (1) L61 (2021)
https://doi.org/10.1093/mnrasl/slab005

A compact core-jet structure in the changing-look Seyfert NGC 2617

Jun Yang, Zsolt Paragi, Robert J Beswick, et al.
Monthly Notices of the Royal Astronomical Society 503 (3) 3886 (2021)
https://doi.org/10.1093/mnras/stab706

The Effects of Large-scale Magnetic Fields on the Model for Repeating Changing-look AGNs

Xin Pan, Shuang-Liang Li and Xinwu Cao
The Astrophysical Journal 910 (2) 97 (2021)
https://doi.org/10.3847/1538-4357/abe766

A Magnetic Disk-outflow Model for Changing Look Active Galactic Nuclei

Junjie Feng, Xinwu Cao, Jia-wen Li and Wei-Min Gu
The Astrophysical Journal 916 (2) 61 (2021)
https://doi.org/10.3847/1538-4357/ac07a6

Rapid luminosity decline and subsequent reformation of the innermost dust distribution in the changing-look AGN Mrk 590

Mitsuru Kokubo and Takeo Minezaki
Monthly Notices of the Royal Astronomical Society 491 (4) 4615 (2020)
https://doi.org/10.1093/mnras/stz3397

Spectropolarimetry of the changing-look active galactic nucleus Mrk 1018

D. Hutsemékers, B. Agís González, F. Marin and D. Sluse
Astronomy & Astrophysics 644 L5 (2020)
https://doi.org/10.1051/0004-6361/202039760

Tracking the state transitions in changing-look active galactic nuclei through their polarized-light echoes

F. Marin and D. Hutsemékers
Astronomy & Astrophysics 636 A23 (2020)
https://doi.org/10.1051/0004-6361/201936123

SkyMapper colours of Seyfert galaxies and Changing-Look AGN

Christian Wolf, Jacob Golding, Wei Jeat Hon and Christopher A Onken
Monthly Notices of the Royal Astronomical Society 499 (1) 1005 (2020)
https://doi.org/10.1093/mnras/staa2794

Host galaxy properties of changing-look AGNs revealed in the MaNGA survey

Xiaoling Yu, Yong Shi, Yanmei Chen, et al.
Monthly Notices of the Royal Astronomical Society 498 (3) 3985 (2020)
https://doi.org/10.1093/mnras/staa2627

AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy

E C Kool, T M Reynolds, S Mattila, et al.
Monthly Notices of the Royal Astronomical Society 498 (2) 2167 (2020)
https://doi.org/10.1093/mnras/staa2351

KASHz: No evidence for ionised outflows instantaneously suppressing star formation in moderate luminosity AGN at z ∼ 1.4–2.6

J Scholtz, C M Harrison, D J Rosario, et al.
Monthly Notices of the Royal Astronomical Society 492 (3) 3194 (2020)
https://doi.org/10.1093/mnras/staa030

A Mid-infrared Flare in the Active Galaxy MCG-02-04-026: Dust Echo of a Nuclear Transient Event

Luming Sun, Ning Jiang, Tinggui Wang, Hongyan Zhou, Liming Dou, Chenwei Yang, Xiang Pan, Zhenfeng Sheng, Zhihao Zhong, Lin Yan and Ge Li
The Astrophysical Journal 898 (2) 129 (2020)
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Suspended and Restored Activities of a Nearby Supermassive Black Hole

J. Wang, D. W. Xu, S. S. Sun, Q. C. Feng, T. R. Li, P. F. Xiao and J. Y. Wei
The Astronomical Journal 159 (6) 245 (2020)
https://doi.org/10.3847/1538-3881/ab85cc

Spectral variability of a sample of extreme variability quasars and implications for the Mg ii broad-line region

Qian Yang, Yue Shen, Yu-Ching Chen, et al.
Monthly Notices of the Royal Astronomical Society 493 (4) 5773 (2020)
https://doi.org/10.1093/mnras/staa645

Evidence for Returning Disk Radiation in the Black Hole X-Ray Binary XTE J1550–564

Riley M. T. Connors, Javier A. García, Thomas Dauser, Victoria Grinberg, James F. Steiner, Navin Sridhar, Jörn Wilms, John Tomsick, Fiona Harrison and Stefan Licklederer
The Astrophysical Journal 892 (1) 47 (2020)
https://doi.org/10.3847/1538-4357/ab7afc

Gemini Imaging of the Host Galaxies of Changing-look Quasars

Paul J. L. Charlton, John J. Ruan, Daryl Haggard, Scott F. Anderson, Michael Eracleous, Chelsea L. MacLeod and Jessie C. Runnoe
The Astrophysical Journal 876 (1) 75 (2019)
https://doi.org/10.3847/1538-4357/ab0ec1

Extreme AGN variability: evidence of magnetically elevated accretion?

Jason Dexter and Mitchell C Begelman
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https://doi.org/10.1093/mnrasl/sly213

Learning Transient Universe in Near-ultraviolet by Wide-angle Cameras

J. Wang, E. W. Liang and J. Y. Wei
Publications of the Astronomical Society of the Pacific 131 (1003) 095001 (2019)
https://doi.org/10.1088/1538-3873/ab2749

MUSE observations of a changing-look AGN – I. The reappearance of the broad emission lines

S I Raimundo, M Vestergaard, J Y Koay, et al.
Monthly Notices of the Royal Astronomical Society 486 (1) 123 (2019)
https://doi.org/10.1093/mnras/stz852

1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months

Benny Trakhtenbrot, Iair Arcavi, Chelsea L. MacLeod, Claudio Ricci, Erin Kara, Melissa L. Graham, Daniel Stern, Fiona A. Harrison, Jamison Burke, Daichi Hiramatsu, Griffin Hosseinzadeh, D. Andrew Howell, Stephen J. Smartt, Armin Rest, Jose L. Prieto, Benjamin J. Shappee, Thomas W.-S. Holoien, David Bersier, Alexei V. Filippenko, Thomas G. Brink, WeiKang Zheng, Ruancun Li, Ronald A. Remillard and Michael Loewenstein
The Astrophysical Journal 883 (1) 94 (2019)
https://doi.org/10.3847/1538-4357/ab39e4

A Forward Modeling Approach to AGN Variability--Method Description and Early Applications

Lia F. Sartori, Benny Trakhtenbrot, Kevin Schawinski, Neven Caplar, Ezequiel Treister and Ce Zhang
The Astrophysical Journal 883 (2) 139 (2019)
https://doi.org/10.3847/1538-4357/ab3c55

Two New “Turn-off” Changing-look Active Galactic Nuclei and Implication on “Partially Obscured” AGNs

J. Wang, D. W. Xu, Y. Wang, J. B. Zhang, J. Zheng and J. Y. Wei
The Astrophysical Journal 887 (1) 15 (2019)
https://doi.org/10.3847/1538-4357/ab4d90

The Sloan Digital Sky Survey Reverberation Mapping Project: Accretion and Broad Emission Line Physics from a Hypervariable Quasar

Jason Dexter, Shuo Xin, Yue Shen, C. J. Grier, Teng Liu, Suvi Gezari, Ian D. McGreer, W. N. Brandt, P. B. Hall, Keith Horne, Torben Simm, Andrea Merloni, Paul J. Green, M. Vivek, Jonathan R. Trump, Yasaman Homayouni, B. M. Peterson, Donald P. Schneider, K. Kinemuchi, Kaike Pan and Dmitry Bizyaev
The Astrophysical Journal 885 (1) 44 (2019)
https://doi.org/10.3847/1538-4357/ab4354

The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: The Fourth and Fifth Data Releases

Su Yao, Xue-Bing Wu, Y. L. Ai, Jinyi Yang, Qian Yang, Xiaoyi Dong, Ravi Joshi, Feige Wang, Xiaotong Feng, Yuming Fu, Wen Hou, A.-L. Luo, Xiao Kong, Yuanqi Liu, Y.-H. Zhao, Y.-X. Zhang, H.-L. Yuan and Shiyin Shen
The Astrophysical Journal Supplement Series 240 (1) 6 (2019)
https://doi.org/10.3847/1538-4365/aaef88

Nine-hour X-ray quasi-periodic eruptions from a low-mass black hole galactic nucleus

G. Miniutti, R. D. Saxton, M. Giustini, K. D. Alexander, R. P. Fender, I. Heywood, I. Monageng, M. Coriat, A. K. Tzioumis, A. M. Read, C. Knigge, P. Gandhi, M. L. Pretorius and B. Agís-González
Nature 573 (7774) 381 (2019)
https://doi.org/10.1038/s41586-019-1556-x

Discovery of 21 New Changing-look AGNs in the Northern Sky

Qian Yang, Xue-Bing Wu, Xiaohui Fan, Linhua Jiang, Ian McGreer, Jinyi Shangguan, Su Yao, Bingquan Wang, Ravi Joshi, Richard Green, Feige Wang, Xiaotong Feng, Yuming Fu, Jinyi Yang and Yuanqi Liu
The Astrophysical Journal 862 (2) 109 (2018)
https://doi.org/10.3847/1538-4357/aaca3a

A Mid-IR Selected Changing-look Quasar and Physical Scenarios for Abrupt AGN Fading

Daniel Stern, Barry McKernan, Matthew J. Graham, K. E. S. Ford, Nicholas P. Ross, Aaron M. Meisner, Roberto J. Assef, Mislav Baloković, Murray Brightman, Arjun Dey, Andrew Drake, S. G. Djorgovski, Peter Eisenhardt and Hyunsung D. Jun
The Astrophysical Journal 864 (1) 27 (2018)
https://doi.org/10.3847/1538-4357/aac726

Identification of SDSS J141324.27+530527.0 as a New “Changing-look” Quasar with a “Turn-on” Transition

J. Wang, D. W. Xu and J. Y. Wei
The Astrophysical Journal 858 (1) 49 (2018)
https://doi.org/10.3847/1538-4357/aab88b

EUCLIA—Exploring the UV/Optical Continuum Lag in Active Galactic Nuclei. I. A Model without Light Echoing

Zhen-Yi Cai, Jun-Xian Wang, Fei-Fan Zhu, Mou-Yuan Sun, Wei-Min Gu, Xin-Wu Cao and Feng Yuan
The Astrophysical Journal 855 (2) 117 (2018)
https://doi.org/10.3847/1538-4357/aab091

Spectral features of tidal disruption candidates and alternative origins for such transient flares

Curtis J Saxton, Hagai B Perets and Alexei Baskin
Monthly Notices of the Royal Astronomical Society 474 (3) 3307 (2018)
https://doi.org/10.1093/mnras/stx2928

Sifting for Sapphires: Systematic Selection of Tidal Disruption Events in iPTF

T. Hung, S. Gezari, S. B. Cenko, S. van Velzen, N. Blagorodnova, Lin Yan, S. R. Kulkarni, R. Lunnan, T. Kupfer, G. Leloudas, A. K. H. Kong, P. E. Nugent, C. Fremling, Russ R. Laher, F. J. Masci, Y. Cao, R. Roy and T. Petrushevska
The Astrophysical Journal Supplement Series 238 (2) 15 (2018)
https://doi.org/10.3847/1538-4365/aad8b1

Explaining changing-look AGN with state transition triggered by rapid mass accretion rate drop

Hirofumi Noda and Chris Done
Monthly Notices of the Royal Astronomical Society 480 (3) 3898 (2018)
https://doi.org/10.1093/mnras/sty2032

An X-ray view of central engines of low-luminosity quasars (LLQSO) in the local Universe

Sibasish Laha, Ritesh Ghosh, Matteo Guainazzi and Alex G Markowitz
Monthly Notices of the Royal Astronomical Society 480 (2) 1522 (2018)
https://doi.org/10.1093/mnras/sty1919