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A structure function analysis of VST-COSMOS AGN

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Study of X-Ray Intraday Variability of HBL Blazars Based on Observations Obtained with XMM-Newton

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Polarized Optical Emission of the Blazar PKS 1222+216: Discovery of a 420 day Quasiperiodic Signal

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https://doi.org/10.3847/1538-4357/abc750

A characteristic optical variability time scale in astrophysical accretion disks

Colin J. Burke, Yue Shen, Omer Blaes, Charles F. Gammie, Keith Horne, Yan-Fei Jiang, Xin Liu, Ian M. McHardy, Christopher W. Morgan, Simone Scaringi and Qian Yang
Science 373 (6556) 789 (2021)
https://doi.org/10.1126/science.abg9933

Multiband variability of the TeV blazar PG 1553+113 with XMM–Newton

Vinit Dhiman, Alok C Gupta, Haritma Gaur and Paul J Wiita
Monthly Notices of the Royal Astronomical Society 506 (1) 1198 (2021)
https://doi.org/10.1093/mnras/stab1743

Machine learning application to detect light echoes around black holes

P Chainakun, N Mankatwit, P Thongkonsing and A J Young
Monthly Notices of the Royal Astronomical Society 506 (4) 5318 (2021)
https://doi.org/10.1093/mnras/stab2098

Confrontation of Observation and Theory: High-frequency QPOs in X-Ray Binaries, Tidal Disruption Events, and Active Galactic Nuclei

Krista Lynne Smith, Celia R. Tandon and Robert V. Wagoner
The Astrophysical Journal 906 (2) 92 (2021)
https://doi.org/10.3847/1538-4357/abc9b7

A Radio Quasi-periodic Oscillation of 176 days in the Radio-loud Narrow-line Seyfert 1 Galaxy J0849+5108

Pengfei Zhang and Zhongxiang Wang
The Astrophysical Journal 914 (1) 1 (2021)
https://doi.org/10.3847/1538-4357/abfafd

Exploring black hole scaling relations via the ensemble variability of active galactic nuclei

A Georgakakis, I Papadakis and M Paolillo
Monthly Notices of the Royal Astronomical Society 508 (3) 3463 (2021)
https://doi.org/10.1093/mnras/stab2818

X-Ray Intraday Variability of the TeV Blazar PKS 2155–304 with Suzaku during 2005–2014

Zhongli Zhang, Alok C. Gupta, Haritma Gaur, Paul J. Wiita, Tao An, Yang Lu, Shida Fan and Haiguang Xu
The Astrophysical Journal 909 (2) 103 (2021)
https://doi.org/10.3847/1538-4357/abdd38

The nature of the extreme X-ray variability in the NLS1 1H 0707-495

M L Parker, W N Alston, L Härer, Z Igo, A Joyce, D J K Buisson, P Chainakun, A C Fabian, J Jiang, P Kosec, G A Matzeu, C Pinto, Y Xu and F Zaidouni
Monthly Notices of the Royal Astronomical Society 508 (2) 1798 (2021)
https://doi.org/10.1093/mnras/stab2434

The BAT AGN Spectroscopic Survey. XVIII. Searching for Supermassive Black Hole Binaries in X-Rays

Tingting Liu, Michael Koss, Laura Blecha, Claudio Ricci, Benny Trakhtenbrot, Richard Mushotzky, Fiona Harrison, Kohei Ichikawa, Darshan Kakkad, Kyuseok Oh, Meredith Powell, George C. Privon, Kevin Schawinski, T. Taro Shimizu, Krista Lynne Smith, Daniel Stern, Ezequiel Treister and C. Megan Urry
The Astrophysical Journal 896 (2) 122 (2020)
https://doi.org/10.3847/1538-4357/ab952d

X-ray variability analysis of a large series of XMM–Newton +NuSTAR observations of NGC 3227

A P Lobban, T J Turner, J N Reeves, V Braito and L Miller
Monthly Notices of the Royal Astronomical Society 494 (4) 5056 (2020)
https://doi.org/10.1093/mnras/staa1008

A Suzaku sample of unabsorbed narrow-line and broad-line Seyfert 1 galaxies – I. X-ray spectral properties

S G H Waddell and L C Gallo
Monthly Notices of the Royal Astronomical Society 498 (4) 5207 (2020)
https://doi.org/10.1093/mnras/staa2783